The question comes up early in the sourcing process: cotton or a cotton/poly blend? Both are common in heavyweight hoodies, and suppliers offer both at similar price points.
The difference is not always obvious from spec sheets, but it becomes very clear once you start handling samples or dealing with print results, colour consistency, and customer feedback after the first wash.
What Each Composition Actually Is
A cotton hoodie is made from 100% natural cellulosic fibre. Depending on the GSM and the knit structure, it can feel anything from soft and drapey to firm and structured. At 400 GSM and above, a well-constructed cotton hoodie has a weight that reads immediately as premium.
A cotton/poly blend combines cotton with polyester fibres, typically in ratios of 80/20 or 60/40. Polyester is a synthetic fibre derived from petroleum. It adds specific technical properties to the fabric, but also removes others.
How Each Performs in Daily Wear
Cotton regulates temperature better. The natural fibre absorbs moisture and releases it, which keeps the garment from feeling clammy in variable conditions. It softens progressively with washing, developing a worn-in quality that many wearers associate with longevity and quality.
Cotton/poly blends are more dimensionally stable out of the wash. The polyester component resists shrinkage and holds the original shape of the garment longer under repeated laundering. That is the primary reason mass-market brands use blends: they reduce returns from size inconsistency.
However, the tradeoff is tactile. Polyester in a hoodie fabric changes the hand feel in a way that is difficult to disguise at higher percentages. A 60/40 blend tends to feel slightly synthetic and can produce a faint sheen that reads as mid-market. At 80/20, the difference is more subtle but still present.
For a brand positioning at a premium price point, the hand feel of 100% cotton is the more defensible choice. Customers in that segment are handling the product critically.
How Each Responds to Print and Decoration
Screen printing works well on both. Ink adhesion is comparable, and neither composition presents significant problems for standard plastisol or water-based inks.
DTG printing shows a clearer gap. Cotton is the preferred substrate for direct-to-garment because the ink bonds with natural fibre more consistently. On polyester and blends, DTG results can be patchier, particularly in shadow areas or fine detail. The higher the polyester percentage, the more the print quality is at risk.
Embroidery is largely unaffected by fibre composition, though a denser, heavier cotton base provides more stability for high-stitch-count designs.
Colour Performance and Garment Dyeing
For brands working with garment dyeing, piece dyeing, or bespoke colorways, 100% cotton is the only option that accepts reactive dye evenly. Polyester does not take the same dyes as cotton, and in a blend the two fibres dye at different rates. This creates inconsistency across the fabric surface, a problem that becomes visible in solid colours and critical in custom palette work.
René Bassett's garment dyeing service works exclusively with 100% cotton blanks. Solid, vintage, sun-faded and custom colour options are all available on hoodies and other French Terry pieces because the composition makes consistent dyeing possible.
Shrinkage and Sizing Consistency
This is the argument most often made in favour of blends, and it is fair. Cotton does shrink more than polyester. An untreated cotton blank can lose 5 to 8% of its dimensions in the first wash.
The answer to this is pre-shrinking, not adding polyester. A garment that is properly pre-shrunk before it leaves the factory will arrive at its stable size. Subsequent washing produces minimal additional change. This is the approach René Bassett uses across the range: blanks are pre-shrunk, and tolerances are measured across batches to confirm consistency.
Which to Choose
If the brand is built around premium positioning, 100% cotton at a proper weight (420 GSM minimum for a hoodie with real presence) is the stronger choice. The hand feel, the print surface, the response to dyeing, and the way the garment ages all work in favour of cotton.
Cotton/poly blends make sense in specific scenarios: casual basics at accessible price points, where shrinkage control without pre-shrinking is a concern, or where polyester's quick-dry properties are a feature for the product category. For premium streetwear and contemporary fashion, these are not the governing priorities.
René Bassett's 480 GSM French Terry hoodie is 100% cotton, developed and pre-shrunk in-house in Portugal. If you want to assess the weight and hand feel before committing to a first order, the starter pack is the place to start.
Frequently Asked Questions
Is 100% cotton better than a cotton/poly blend for hoodies?
For premium positioning, yes. Cotton delivers a better hand feel, accepts garment dyeing evenly, and ages in a way that improves the product over time. Blends exist primarily to control shrinkage at lower production cost, which is a valid concern for mass-market basics but not the right tradeoff for a brand building at the top end of the market.
Does a cotton/poly blend hoodie shrink less?
Yes, because polyester fibres do not shrink the way natural cotton does. That is the main technical argument in favour of blends. The same result, however, can be achieved in 100% cotton through proper pre-shrinking before the garment ships. A pre-shrunk cotton blank will have residual shrinkage of 0 to 3% with no polyester required.
Can you DTG print on a cotton/poly blend hoodie?
Technically yes, but the results are less consistent than on 100% cotton. DTG ink bonds more reliably with natural fibre. On blended fabrics, particularly above 20% polyester, prints can appear patchier in detailed areas and gradients. For brands where print quality is part of the identity, 100% cotton is the safer substrate.
Why doesn't garment dyeing work on cotton/poly blends?
Reactive dyes, which are used in garment dyeing, bond specifically with natural cellulosic fibres. Polyester requires a different dye chemistry entirely. In a blend, the two fibre types absorb colour at different rates, producing an uneven surface. This makes it impossible to achieve a clean, solid colour from garment dyeing on any fabric that contains polyester.
What percentage of polyester makes a hoodie feel synthetic?
At 60/40 cotton/poly, the synthetic character is noticeable: a slight sheen, a firmer and less natural hand feel. At 80/20, the difference is subtler but still detectable to anyone handling the product with attention. For customers in the premium segment, that distinction registers, even if they cannot name the cause.
What is the best GSM for a 100% cotton premium hoodie? 420 GSM is a reasonable minimum for a hoodie that reads as heavyweight. 480 GSM is the current standard among serious streetwear and contemporary fashion brands. Above 500 GSM, the gains in feel and structure become marginal while the garment can start to feel restrictive in movement. René Bassett's hoodie blank sits at 480 GSM French Terry.
Does 100% cotton make a hoodie too warm?
Not inherently. The weight of the fabric is what determines warmth, not the composition alone. A well-structured 480 GSM cotton hoodie is a heavier outer layer, suited for cooler conditions. The natural fibre does regulate moisture better than polyester, which prevents the trapped-heat feeling common in synthetic-heavy garments.
Related Reading
Cotton vs Cotton/Poly Blend: Which Makes a Better Premium Hoodie
The question comes up early in the sourcing process: cotton or a cotton/poly blend? Both are common in heavyweight hoodies, and suppliers offer both at similar price points.
The difference is not always obvious from spec sheets, but it becomes very clear once you start handling samples or dealing with print results, colour consistency, and customer feedback after the first wash.
What Each Composition Actually Is
A cotton hoodie is made from 100% natural cellulosic fibre. Depending on the GSM and the knit structure, it can feel anything from soft and drapey to firm and structured. At 400 GSM and above, a well-constructed cotton hoodie has a weight that reads immediately as premium.
A cotton/poly blend combines cotton with polyester fibres, typically in ratios of 80/20 or 60/40. Polyester is a synthetic fibre derived from petroleum. It adds specific technical properties to the fabric, but also removes others.
How Each Performs in Daily Wear
Cotton regulates temperature better. The natural fibre absorbs moisture and releases it, which keeps the garment from feeling clammy in variable conditions. It softens progressively with washing, developing a worn-in quality that many wearers associate with longevity and quality.
Cotton/poly blends are more dimensionally stable out of the wash. The polyester component resists shrinkage and holds the original shape of the garment longer under repeated laundering. That is the primary reason mass-market brands use blends: they reduce returns from size inconsistency.
However, the tradeoff is tactile. Polyester in a hoodie fabric changes the hand feel in a way that is difficult to disguise at higher percentages. A 60/40 blend tends to feel slightly synthetic and can produce a faint sheen that reads as mid-market. At 80/20, the difference is more subtle but still present.
For a brand positioning at a premium price point, the hand feel of 100% cotton is the more defensible choice. Customers in that segment are handling the product critically.
How Each Responds to Print and Decoration
Screen printing works well on both. Ink adhesion is comparable, and neither composition presents significant problems for standard plastisol or water-based inks.
DTG printing shows a clearer gap. Cotton is the preferred substrate for direct-to-garment because the ink bonds with natural fibre more consistently. On polyester and blends, DTG results can be patchier, particularly in shadow areas or fine detail. The higher the polyester percentage, the more the print quality is at risk.
Embroidery is largely unaffected by fibre composition, though a denser, heavier cotton base provides more stability for high-stitch-count designs.
Colour Performance and Garment Dyeing
For brands working with garment dyeing, piece dyeing, or bespoke colorways, 100% cotton is the only option that accepts reactive dye evenly. Polyester does not take the same dyes as cotton, and in a blend the two fibres dye at different rates. This creates inconsistency across the fabric surface, a problem that becomes visible in solid colours and critical in custom palette work.
René Bassett's garment dyeing service works exclusively with 100% cotton blanks. Solid, vintage, sun-faded and custom colour options are all available on hoodies and other French Terry pieces because the composition makes consistent dyeing possible.
Shrinkage and Sizing Consistency
This is the argument most often made in favour of blends, and it is fair. Cotton does shrink more than polyester. An untreated cotton blank can lose 5 to 8% of its dimensions in the first wash.
The answer to this is pre-shrinking, not adding polyester. A garment that is properly pre-shrunk before it leaves the factory will arrive at its stable size. Subsequent washing produces minimal additional change. This is the approach René Bassett uses across the range: blanks are pre-shrunk, and tolerances are measured across batches to confirm consistency.
Which to Choose
If the brand is built around premium positioning, 100% cotton at a proper weight (420 GSM minimum for a hoodie with real presence) is the stronger choice. The hand feel, the print surface, the response to dyeing, and the way the garment ages all work in favour of cotton.
Cotton/poly blends make sense in specific scenarios: casual basics at accessible price points, where shrinkage control without pre-shrinking is a concern, or where polyester's quick-dry properties are a feature for the product category. For premium streetwear and contemporary fashion, these are not the governing priorities.
René Bassett's 480 GSM French Terry hoodie is 100% cotton, developed and pre-shrunk in-house in Portugal. If you want to assess the weight and hand feel before committing to a first order, the starter pack is the place to start.
Frequently Asked Questions
Is 100% cotton better than a cotton/poly blend for hoodies?
For premium positioning, yes. Cotton delivers a better hand feel, accepts garment dyeing evenly, and ages in a way that improves the product over time. Blends exist primarily to control shrinkage at lower production cost, which is a valid concern for mass-market basics but not the right tradeoff for a brand building at the top end of the market.
Does a cotton/poly blend hoodie shrink less?
Yes, because polyester fibres do not shrink the way natural cotton does. That is the main technical argument in favour of blends. The same result, however, can be achieved in 100% cotton through proper pre-shrinking before the garment ships. A pre-shrunk cotton blank will have residual shrinkage of 0 to 3% with no polyester required.
Can you DTG print on a cotton/poly blend hoodie?
Technically yes, but the results are less consistent than on 100% cotton. DTG ink bonds more reliably with natural fibre. On blended fabrics, particularly above 20% polyester, prints can appear patchier in detailed areas and gradients. For brands where print quality is part of the identity, 100% cotton is the safer substrate.
Why doesn't garment dyeing work on cotton/poly blends?
Reactive dyes, which are used in garment dyeing, bond specifically with natural cellulosic fibres. Polyester requires a different dye chemistry entirely. In a blend, the two fibre types absorb colour at different rates, producing an uneven surface. This makes it impossible to achieve a clean, solid colour from garment dyeing on any fabric that contains polyester.
What percentage of polyester makes a hoodie feel synthetic?
At 60/40 cotton/poly, the synthetic character is noticeable: a slight sheen, a firmer and less natural hand feel. At 80/20, the difference is subtler but still detectable to anyone handling the product with attention. For customers in the premium segment, that distinction registers, even if they cannot name the cause.
What is the best GSM for a 100% cotton premium hoodie? 420 GSM is a reasonable minimum for a hoodie that reads as heavyweight. 480 GSM is the current standard among serious streetwear and contemporary fashion brands. Above 500 GSM, the gains in feel and structure become marginal while the garment can start to feel restrictive in movement. René Bassett's hoodie blank sits at 480 GSM French Terry.
Does 100% cotton make a hoodie too warm?
Not inherently. The weight of the fabric is what determines warmth, not the composition alone. A well-structured 480 GSM cotton hoodie is a heavier outer layer, suited for cooler conditions. The natural fibre does regulate moisture better than polyester, which prevents the trapped-heat feeling common in synthetic-heavy garments.
Related Reading
What Is French Terry? The Complete Fabric Guide for Clothing Brands
What Does GSM Mean in Clothing? And Why It Matters More Than You Think
Polyester vs Cotton Hoodies: What Your Brand Should Know
Written by
Ricardo Vieira
Ricardo Vieira is the founder of René Bassett and has worked in the Portuguese textile industry for over 10 years. He grew up close to garment production — his family's company operated in the sector — and developed a technical understanding of fabrics, fabric weights and customisation processes that shapes every product René Bassett brings to market. He writes about everything a clothing brand founder needs to understand about blanks, fabrics and production before launching — or scaling — a brand.