Use the DRIFIRE sizing and fit information below to help select the best size. DRIFIRE sizing can vary by garment construction, fabric weight, and product family. Use the applicable chart below and check the individual product's available sizing when a product-specific size chart is provided.
DRIFIRE Men's Shirts
DRIFIRE uses different sizing references for knit shirts and woven work shirts. For knit garments, garment chest measurement can vary depending on fabric weight.
Knit Shirts
Chest measurements in inches. Use the row that most closely matches the fabric weight or garment style.
| Fabric Type | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|
| Ultra-Lightweight | 36 | 40 | 44 | 48 | 52 | 56 |
| Lightweight | 36 | 40 | 44 | 48 | 52 | 56 |
| Midweight | 38 | 42 | 46 | 50 | 54 | 58 |
| Heavyweight | 38.5 | 42.5 | 46.5 | 50.5 | 54.5 | 58.5 |
| Fleece | 44 | 48 | 53 | 56 | 60 | 64 |
Woven Work Shirts
Garment measurements in inches for traditional DRIFIRE woven work shirts.
| Measurement | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|
| Neck | 16.25 | 17.25 | 18.25 | 18.25 | 20.25 | 21.25 |
| Chest | 41.5 | 45.5 | 49.5 | 53.5 | 57.5 | 61.5 |
| Regular Sleeve | 34 | 34.5 | 35 | 35.5 | 36 | 36.5 |
| Tall Sleeve | 35.5 | 36 | 36.5 | 37 | 37.5 | 38 |
Regular vs. Tall: Tall woven shirts use the same neck and chest measurements as Regular but add approximately 1½ inches to sleeve length.
Current styles: Many current DRIFIRE work shirts are offered from S through 3XL, with Tall sizes beginning at M on applicable styles.
DRIFIRE Men's Outerwear
DRIFIRE outerwear includes hoodies, fleece layers, shirt jackets, soft-shell jackets, insulated jackets, and specialty FR outer layers. Size availability varies considerably by product.
| Outerwear Type | Sizing Guidance |
|---|---|
| Fleece & Hoodies | Use the size range shown on the individual product. DRIFIRE fleece garments are designed to provide room for movement and may also function as insulating layers. |
| Shirt Jackets | Current DRIFIRE Range Flex shirt jackets are offered from S through 3XL in Regular, with Tall options from M through 3XL. |
| Soft-Shell & Insulated Jackets | Follow the product-specific DRIFIRE sizing chart. Select enough room for the FR base and mid layers normally worn underneath. |
Layering tip: Do not automatically size up every DRIFIRE jacket. Choose your normal body size first, then account for the thickness of the FR layers you expect to wear beneath the garment.
DRIFIRE Women's Shirts
DRIFIRE offers women's-specific FR work shirts and Hi-Visibility shirts. These garments are designed for a women's silhouette and should be sized from the women's product chart rather than substituting men's sizing.
| Women's Shirt Type | Current Sizing Guidance |
|---|---|
| FR Work Shirts | Current women's DRIFIRE and TECGEN work shirts are commonly offered from S through 2XL. Additional sizes may be available on certain products. |
| Hi-Visibility Work Shirts | Current women's Hi-Visibility work shirts are offered in women's-specific sizing, commonly S through 2XL in Regular. |
| Knit / Long Sleeve Tees | Use the women's size chart provided with the individual product. Women's DRIFIRE knit styles are designed specifically for a women's fit. |
Women's fit: DRIFIRE women's work shirts are designed with a women's silhouette rather than simply reducing the dimensions of a men's garment. Use the women's sizing supplied with the individual product whenever available.
DRIFIRE Women's Outerwear
DRIFIRE offers women's-specific FR outer layers, including hoodies. Women's sizing varies by product, so use the individual garment's sizing chart and account for any FR layers normally worn underneath.
| Outerwear Type | Sizing Guidance |
|---|---|
| Women's Hoodies | Use the women's size chart displayed on the individual hoodie. DRIFIRE offers women's-specific heavyweight zip-front FR hoodies. |
| Other Women's Outerwear | Use the product-specific women's chart when available. For unisex garments, follow the sizing published with that specific product. |
Layering: When outerwear will be worn over multiple FR layers, account for those layers when choosing a size. Product-specific DRIFIRE measurements should take priority.
DRIFIRE FR Headgear
DRIFIRE offers FR beanies, balaclavas, neck gaiters, hoods, and other protective headwear. Most stretch headwear does not use traditional apparel sizing.
| Headgear Type | Sizing / Fit Guidance |
|---|---|
| Combat Fleece Beanie | One Size Fits Most. |
| PRIME Cold Weather Balaclava | One Size Fits Most. Stretch construction allows the balaclava to be worn in multiple configurations. |
| Hot Weather Balaclavas & Neck Gaiters | Generally stretch-fit / unisize. Use the sizing listed on the individual product. |
| FR Winter Beanies | Select industrial DRIFIRE winter beanies are offered in Regular and Large. |
| Insulated Hoods | Use the product-specific sizing or compatibility information supplied by DRIFIRE. |
Headgear note: Because many DRIFIRE balaclavas, gaiters, and beanies use stretch construction, a traditional head-circumference chart is not necessary for most styles. Use the size designation shown on the individual product.
How to Measure
Chest/Bust: Measure around the fullest part of the chest or bust while keeping the tape level.
Waist: For tops and full-body garments, measure around the fullest part of the waist.
Hips: Measure loosely around the fullest part of the hips while keeping the tape horizontal.
Sleeve: Measure from the center back of the neck, over the shoulder, past the elbow, and down to the wrist.
Sizing information formatted from DRIFIRE / National Safety Apparel manufacturer sizing guidance and current DRIFIRE product information. Product-specific sizing and available sizes may vary by style. Sources: DRIFIRE Industrial and DRIFIRE Defense .