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Fleece is often treated as a single fabric, but in production, it covers a wide range of materials with very different performance outcomes. Differences in fiber, structure, and finishing can affect warmth, durability, and how the garment holds up over time.
This guide breaks down the most common types of fleece used in clothing manufacturing, from cotton-based options to synthetic variations. It explains how each type behaves in production, helping you choose the right fleece based on performance, design, and budget.
TL;DR: Fleece fabrics vary by weight, texture, and insulation level. Polar fleece is lightweight and versatile, microfleece is thinner for layering, and heavyweight fleece provides maximum warmth. Sherpa fleece adds a wool-like texture for cold weather, while French terry offers a lighter, breathable alternative. Most fleece used in apparel is polyester-based, chosen for warmth, durability, and easy care.
Choosing the right fleece goes beyond softness; it impacts everything from garment structure to print durability and perceived value. A USA clothing manufacturer needs to understand these nuances to deliver consistent quality.
Fleece fabrics are broadly categorized by their fiber composition and knit structure, each offering distinct characteristics for apparel manufacturing. While many variations exist, the primary types used in bulk production for custom apparel include cotton-based, polyester-based, and specialized blends designed for specific performance or aesthetic outcomes. Understanding these foundational categories is essential for informed fabric sourcing.
Cotton fleece is a classic choice, prized for its natural feel, breathability, and comfort. It’s often referred to simply as “fleece” in the context of sweatshirts and sweatpants, forming the backbone of casualwear and athleisure. The interior typically features a brushed pile, while the exterior can be smooth or slightly textured.
While 100% cotton fleece exists, blends with polyester are common to enhance durability, reduce shrinkage, and improve color retention. Cotton fleece typically ranges from 280 GSM to 400 GSM, making it suitable for mid-weight to heavy garments. It dyes well, offering rich, consistent colors.
Sweatshirt fleece, often synonymous with French terry, is a specific type of knit fabric characterized by its smooth exterior and distinctive looped interior. Unlike traditional brushed fleece, the loops on the inside of French terry are left intact, providing a moderate warmth without the heavy bulk of a heavily brushed fleece. It’s a versatile fabric, popular for its comfort and clean aesthetic.
Commonly found in 280 GSM to 350 GSM, French terry offers a balanced weight suitable for year-round wear. Its unique construction provides good moisture absorption and a softer drape than heavily brushed fleeces. This makes it a go-to for many premium custom apparel lines.
Polyester fleece, often recognized as polar fleece, is a synthetic powerhouse known for its exceptional warmth-to-weight ratio and quick-drying properties. It’s made from 100% polyester fibers that are brushed on both sides to create a soft, insulating pile. This construction traps air, providing significant warmth even when wet.
Polar fleece is available in various weights, typically categorized by its GSM: 100 GSM (lightweight), 200 GSM (mid-weight), and 300 GSM (heavyweight). For bulk production, especially for outerwear or performance garments, specifying an anti-pill finish is crucial. Without it, the fabric will quickly form small, unsightly balls (pills) on its surface, degrading its appearance and longevity.
Microfleece is a lighter, thinner version of polyester fleece, characterized by its incredibly soft and fine texture. It typically falls in the 100-200 GSM range, making it ideal for layering without adding bulk. The fibers are very finely brushed, resulting in a plush hand-feel that is often compared to a cloud.
Despite its light weight, microfleece offers good insulation and excellent breathability, making it suitable for transitional weather or active pursuits. Like polar fleece, a high-quality microfleece should come with an anti-pill finish to maintain its smooth appearance over time. This is a common choice for performance-oriented custom apparel where comfort and lightweight warmth are priorities.
Sherpa fleece, also known as boa fleece, is designed to mimic the look and feel of sheep’s wool. It features a deep, fluffy pile on one side, resembling natural shearling, while the other side is typically a smooth knit. This distinctive texture gives it a cozy, rustic, and luxurious appeal, making it a popular choice for fashion-forward outerwear and comfort items.
Sherpa fleece is usually made from polyester and can range from 250 GSM to over 400 GSM, offering significant warmth. Its visual texture and substantial hand-feel make it a standout fabric. When sourcing, pay close attention to the pile density and fiber quality to ensure it maintains its plushness and doesn’t shed excessively after washing.
Beyond the core types, the market offers various specialty fleeces and blends tailored for specific performance, aesthetic, or sustainability goals. These options allow brands to differentiate their products, address particular consumer needs, or meet specific environmental standards. Understanding these niche offerings can open up new possibilities for your custom apparel lines.
While an anti-pill finish is a treatment applied to many synthetic fleeces, it’s worth highlighting as a distinct specification. This treatment is crucial for maintaining the aesthetic and longevity of polyester-based fleeces. Without it, the short fibers on the surface of the fleece can tangle and form small, unsightly balls, known as pills, especially in high-friction areas like underarms or cuffs.
From a manufacturing perspective, always specify anti-pill fleece for any synthetic fleece garment, particularly for bulk production. The slight increase in fabric cost is negligible compared to the brand damage and customer dissatisfaction caused by pilling garments. This is a non-negotiable quality control point that a reliable manufacturer like MFG Merch will always prioritize.
Slub fleece is characterized by its intentional irregularities in the yarn, creating a textured, slightly uneven surface. This gives the fabric a unique, vintage, or heathered aesthetic that differentiates it from uniformly smooth fleeces. The “slubs” are thicker, softer sections woven into the yarn, adding visual interest and a tactile quality.
Typically made from cotton or cotton blends, slub fleece offers the natural comfort of cotton with an added design element. It’s popular in fashion-forward streetwear and casual apparel where a less refined, more organic look is desired. The GSM can vary, but it often falls within the range of standard cotton fleeces, from 280 GSM to 380 GSM.
While most modern fleeces are synthetic, wool fleece represents a premium, natural alternative. It combines the inherent properties of wool – excellent insulation, breathability, and moisture-wicking – with a brushed finish for added softness. Wool fleece is significantly warmer than synthetic fleeces of comparable weight and offers superior odor resistance.
This fabric is often used in high-end outdoor apparel or luxury casualwear due to its higher cost and specialized properties. It typically requires more delicate care than synthetic fleeces. The GSM for wool fleece can vary widely, but it generally offers substantial warmth at lower weights than cotton. Brands aiming for a natural, high-performance, and sustainable profile often explore wool fleece options.
Beyond simply identifying the type of fleece, understanding its inherent properties and how they impact the manufacturing process is crucial for successful apparel production. Factors like GSM, shrinkage, color retention, and care instructions directly influence design, sourcing, and quality control.
GSM (Grams per Square Meter) is a critical metric for fleece, indicating its density and weight. While a higher GSM generally means a thicker, warmer fabric, the actual insulation and hand-feel are also heavily influenced by the fiber type and brushing process. For instance, a 280 GSM cotton fleece will feel different and drape differently than a 280 GSM polyester polar fleece.
When specifying GSM, always consider the intended end-use and desired drape. A reputable custom apparel production partner will help you select the optimal GSM that balances your design vision with practical performance and cost.
Fabric shrinkage is a major concern in apparel manufacturing, particularly with cotton-based fleeces. Pre-washing or pre-shrinking fabric rolls before cutting is a standard practice to minimize post-purchase shrinkage, typically targeting a residual shrinkage of 3-5% or less. Failure to control shrinkage can lead to inconsistent sizing across your bulk orders, resulting in customer complaints and returns.
Polyester fleeces generally exhibit much lower shrinkage rates and better dimensional stability. However, they can be prone to static cling or melting if exposed to high heat (e.g., during printing or drying). Care instructions for fleece garments vary significantly by fiber type:
Clear, accurate care labels are essential for consumer satisfaction and garment longevity. Your manufacturer should be able to provide guidance on appropriate care instructions for the chosen fleece type.
The ability of fleece to hold color consistently and resist fading is crucial for brand image. Different fiber types react differently to dyes:
For bulk production, ensuring consistent dye lots is paramount. A skilled fabric sourcing team will manage this, performing lab dips and color checks against your specified Pantone swatches to prevent noticeable variations between production runs. This is a common pitfall for brands working with inexperienced manufacturers.
| Fabric Type | Typical GSM | Warmth Level | Breathability | Best Use | Print Compatibility | Cost Level |
|---|---|---|---|---|---|---|
| Cotton Fleece | 280–400 | Medium–High | High | Hoodies, sweatshirts, loungewear | Excellent (screen print, DTG) | $$ |
| French Terry | 250–350 | Medium | High | Lightweight hoodies, joggers | Excellent (smooth surface) | $$ |
| Polar Fleece | 100–300 | High | Medium | Jackets, outerwear, activewear | Limited (embroidery preferred) | $–$$ |
| Microfleece | 100–200 | Low–Medium | High | Base layers, lining | Limited (heat transfer, embroidery) | $–$$ |
| Sherpa Fleece | 250–400+ | Very High | Low | Jackets, linings, winter wear | Poor (embroidery only) | $$–$$$ |
| Slub Fleece | 280–380 | Medium | Medium | Fashion hoodies, streetwear | Good (slight texture impact) | $$ |
| Anti-Pill Fleece | 200–300 | Medium–High | Medium | Uniforms, outerwear | Limited (depends on surface) | $$ |
| Wool Fleece | 200–350 | High | High | Premium outdoor wear | Limited (embroidery preferred) | $$$ |
Quick Insight
Start with how the product will be used. Lightweight layering pieces and activewear perform better with microfleece or French terry. Everyday hoodies and loungewear rely on cotton fleece for comfort and print quality. Outerwear or cold-weather products require polar fleece or Sherpa for higher insulation and structure.
Fabric choice should reflect your brand. Cotton fleece delivers a softer, more natural feel, suitable for lifestyle and premium casual lines. Polyester fleece focuses on performance, offering durability and moisture control. Wool fleece positions products at a higher-end level with better warmth and perceived value.
Not all fleece works the same for printing. Smooth surfaces like cotton fleece and French terry handle screen printing and DTG well. Textured or high-pile fabrics like Sherpa and polar fleece limit options, making embroidery or patches more reliable.
Bulk production requires stable materials. Polyester fleece offers better color consistency, less shrinkage, and easier quality control. Cotton fleece needs pre-shrinking and tighter checks to avoid size variation. For synthetic fleece, anti-pill treatment is essential to maintain appearance over time.
Cost structure matters at scale. Cotton blends and standard polyester fleece provide predictable pricing and availability. Specialty fabrics increase cost but help differentiate products. The right balance depends on your target market and production volume.
The best fleece is not one material used everywhere. It is the right material chosen for the right product. Matching fabric to function ensures better performance, consistent quality, and stronger brand positioning.
Not sure which fleece fits your product? MFG Merch helps you select the right materials based on your design, use case, and production goals so your final product performs as expected.
With flexible options, reliable sourcing, and consistent manufacturing standards, your collection stays aligned in both quality and cost at scale. Contact MFG Merch to start your project and get tailored recommendations.
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