SIZING & FIT GUIDE
Precision engineering meets bespoke craftsmanship. Find your exact fit across our motorcycle leather jackets, racing suits, riding pants, and boots.
Men's Motorcycle Leather Jackets
Tailored for standard and armored riding posture with pre-curved sleeves and internal CE-armor pocket allowances. Standard US / UK / EU sizing.
| US / UK Size | EU Size | Chest (in) | Waist (in) | Sleeve Length (in) | Shoulder Width (in) |
|---|---|---|---|---|---|
| XS | 46 | 34" - 36" | 28" - 30" | 24.5" | 17.0" |
| S | 48 | 36" - 38" | 30" - 32" | 25.0" | 17.5" |
| M | 50 | 38" - 40" | 32" - 34" | 25.5" | 18.0" |
| L | 52 | 40" - 42" | 34" - 36" | 26.0" | 18.5" |
| XL | 54 | 42" - 44" | 36" - 38" | 26.5" | 19.0" |
| 2XL | 56 | 44" - 46" | 38" - 40" | 27.0" | 19.5" |
| 3XL | 58 | 46" - 48" | 40" - 42" | 27.5" | 20.0" |
| 4XL | 60 | 48" - 50" | 42" - 44" | 28.0" | 20.5" |
| 5XL | 62 | 50" - 52" | 44" - 46" | 28.5" | 21.0" |
Men's 1-Piece & 2-Piece Racing Suits
Professional track-spec racing suit geometry calibrated for aggressive crouch ergonomics, knee/elbow sliders, aerodynamic speed hump, and CE Level 2 protectors.
| EU Size | US / UK | Rider Height | Chest (in) | Waist (in) | Hips (in) | Inseam (in) | Rider Weight (lbs) |
|---|---|---|---|---|---|---|---|
| EU 48 | 38 | 5'6" - 5'8" | 37" - 38.5" | 31.5" - 33" | 37.5" - 39" | 30.5" | 135 - 150 lbs |
| EU 50 | 40 | 5'7" - 5'9" | 38.5" - 40" | 33" - 34.5" | 39" - 40.5" | 31.5" | 145 - 165 lbs |
| EU 52 | 42 | 5'8" - 5'11" | 40" - 41.5" | 34.5" - 36" | 40.5" - 42" | 32.0" | 160 - 180 lbs |
| EU 54 | 44 | 5'10" - 6'1" | 41.5" - 43" | 36" - 38" | 42" - 43.5" | 32.5" | 175 - 195 lbs |
| EU 56 | 46 | 5'11" - 6'2" | 43" - 45" | 38" - 39.5" | 43.5" - 45" | 33.0" | 190 - 210 lbs |
| EU 58 | 48 | 6'0" - 6'3" | 45" - 46.5" | 39.5" - 41" | 45" - 46.5" | 33.5" | 205 - 225 lbs |
| EU 60 | 50 | 6'1" - 6'4" | 46.5" - 48" | 41" - 43" | 46.5" - 48" | 34.0" | 220 - 240 lbs |
Motorcycle Leather Boots & Racing Shoes
International conversion chart for Narson track racing boots, touring footwear, and reinforced urban riding shoes. Measure foot length standing flat against a wall.
| US Men's | EU Size | UK Size | Foot Length (in) | Fit Profile |
|---|---|---|---|---|
| US 7.0 | EU 40 | UK 6.5 | 9.8" | Standard / Reinforced Toe |
| US 8.0 | EU 41 | UK 7.5 | 10.2" | Standard / Reinforced Toe |
| US 9.0 | EU 42 | UK 8.5 | 10.6" | Standard / Reinforced Toe |
| US 10.0 | EU 43 | UK 9.5 | 11.0" | Standard / Reinforced Toe |
| US 11.0 | EU 44 | UK 10.5 | 11.4" | Standard / Reinforced Toe |
| US 12.0 | EU 45 | UK 11.5 | 11.8" | Standard / Reinforced Toe |
| US 13.0 | EU 46 | UK 12.5 | 12.2" | Standard / Reinforced Toe |
| US 14.0 | EU 47 - 48 | UK 13.5 | 12.6" | Extended Sizing / Track Spec |
Leather Riding Pants & Chaps
Crafted from 1.2 - 1.3mm drum-dyed full-grain cowhide with accordion knee stretch panels, waist adjustment buckles, and reinforced hip armor pockets.
| Size | Waist (in) | Hips (in) | Inseam (in) | Thigh Circumference (in) |
|---|---|---|---|---|
| S | 30" - 31" | 36" - 37" | 31.0" | 21" - 22" |
| M | 32" - 33" | 38" - 39" | 31.5" | 22" - 23" |
| L | 34" - 35" | 40" - 41" | 32.0" | 23" - 24" |
| XL | 36" - 37" | 42" - 43" | 32.5" | 24" - 25" |
| 2XL | 38" - 39" | 44" - 45" | 33.0" | 25" - 26" |
| 3XL | 40" - 41" | 46" - 47" | 33.5" | 26" - 27" |
| 4XL | 42" - 43" | 48" - 49" | 34.0" | 27" - 28" |
| 5XL | 44" - 45" | 50" - 51" | 34.0" | 28" - 29" |
Motorcycle Racing & Leather Gloves
Track-spec pre-curved ergonomics with carbon knuckle protector allowances. Measure palm circumference around knuckles of dominant hand (excluding thumb) and hand length from wrist crease to middle fingertip.
| Size | Palm Circumference (in) | Hand Length (in) | Knuckle Width (in) | Fit Profile |
|---|---|---|---|---|
| S | 7.0" - 7.5" | 6.7" - 7.1" | 3.0" - 3.2" | Snug Track Spec / Pre-Curved |
| M | 7.5" - 8.2" | 7.1" - 7.5" | 3.2" - 3.4" | Snug Track Spec / Pre-Curved |
| L | 8.2" - 9.0" | 7.5" - 7.9" | 3.4" - 3.6" | Standard Ergonomic Fit |
| XL | 9.0" - 9.8" | 7.9" - 8.3" | 3.6" - 3.8" | Standard Ergonomic Fit |
| 2XL | 9.8" - 10.6" | 8.3" - 8.7" | 3.8" - 4.0" | Reinforced Palm / Extended Cuff |
| 3XL | 10.6" - 11.4" | 8.7" - 9.1" | 4.0" - 4.2" | Extended Sizing / Track Spec |
How To Measure For Motorcycle Gear
Accurate measurements are the foundation of road comfort, aerodynamic stability, and safety armor alignment. Use a flexible tailor's tape and measure wearing your usual riding undergarments.
Technical Measurement Points
Chest Measurement
Wrap the measuring tape around the fullest circumference of your chest, passing closely under your armpits and straight across your shoulder blades.
- Keep the tape parallel to the floor at all times.
- Breathe normally; do not hyper-expand or hold your breath.
- If you plan to wear a chest protector or back armor insert, wear it while measuring.
Waist Measurement
Measure horizontally around your natural waistline (typically 1 to 2 inches / 3-5 cm below your navel, where your riding pants waistband naturally rests).
- Maintain a comfortable, relaxed posture without sucking in your stomach.
- Slip one finger beneath the tape measure to ensure proper ergonomic ease for long rides.
Sleeve Length
With your arm relaxed and slightly bent at the elbow (approx. 45 degrees) in riding position, measure from the outer edge of your shoulder bone down the outside of the arm to the wrist bone.
- Motorcycle jacket sleeves are intentionally cut 1 inch longer so your wrists remain covered when reaching handlebars.
- Ensure tape tracks the outer curve of the elbow.
Shoulder Width
Stand upright with natural shoulder posture. Measure straight across your upper back from the outer bony tip of your left shoulder to the outer tip of your right shoulder.
- Follow the natural contour of your upper back without dipping.
- Crucial for ensuring the internal CE shoulder armor pods align directly over your joint caps.
Measuring Inseam & Thigh
Inseam: Stand barefoot with feet shoulder-width apart against a wall. Measure along the inside of your leg from the crotch junction down to the ankle bone.
Thigh: Measure around the widest part of your upper thigh approximately 2 inches below the groin to ensure leather chaps or racing trousers accommodate knee pucks and armor.
Measuring Foot Length
Place a sheet of paper on the floor against a flat wall. Stand barefoot or with riding socks on the paper with your heel firmly touching the wall.
Mark the tip of your longest toe with a pencil held vertically. Measure the distance from the edge of the sheet to the mark. If between sizes, always size up for riding socks.
PRO FIT & BREAK-IN GUIDANCE
Initial Snugness is Expected
Premium full-grain leather will naturally break in and stretch approximately 3-5% over your first 10-15 hours of riding, molding to your individual anatomy. An initially snug fit guarantees the armor remains in place during high-speed motion.
Test in the Riding Position
Never evaluate a motorcycle jacket or racing suit while standing upright in front of a mirror. Sit on your motorcycle or assume your riding stance with arms reaching forward to judge sleeve length, shoulder freedom, and lower back coverage.
Allow for Thermal Layers
If you ride year-round or through cold seasons with a fleece mid-layer, heated vest, or airbag vest, consider ordering one size larger or contacting our team for bespoke expandable torso gussets.
NEED A CUSTOM TAILORED SUIT OR JACKET?
Every rider's body and riding posture is unique. Narson Leather offers precision made-to-measure tailoring for all jackets, 1-piece suits, and pants with custom colorways, sponsor patches, race numbers, and CE Level 2 armor placement.
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