Swiss company Compressort has an extensive clothing line for trail runners. Most items are fairly close-fitting.
Size advice Compressport
First, a bit of general advice. For socks and non-compression products: choose your normal size.
For compression products: If you're between two sizes, always choose the larger size. Don't worry! You'll still benefit from the compression. Your muscles swell during exercise, and your size should allow for a certain margin to prevent a tourniquet effect and thus restricting blood flow.
Size charts Compressport
Most size charts are unisex, except for tops, where sizes differ.
Women: Shirts, long sleeves and jackets

| 1 | 2 | 3 | |
|---|---|---|---|
| XS | 77-82cm | 62-67cm | 84-89cm |
| S | 83-88cm | 68-73cm | 90-95cm |
| M | 89-94cm | 74-79cm | 96-101cm |
| L | 95-100cm | 80-85cm | 102-107cm |
| XL | 101-106cm | 86-91cm | 108-113cm |
Men: Shirts, long sleeves and jackets

| 1 | 2 | 3 | |
|---|---|---|---|
| XS | 84 - 89cm | 70 - 7cm5 | 83 - 88cm |
| S | 90 - 95cm | 76 - 81cm | 89-94cm |
| M | 96 - 101cm | 82 - 87cm | 95-100cm |
| L | 102 - 107cm | 88 - 93cm | 101 - 106cm |
| XL | 108 - 113cm | 94 - 99cm | 107 - 112cm |
Shorts or Quads with T-sizing

| Upper leg | |
|---|---|
| T0 - XS | 44-49cm |
| T1 - S | 49-54cm |
| T2 - M | 54-59cm |
| T3 - L | 59-64cm |
| T4 - XL | 64-69cm |
Tights and pants

| 1. Waist | 2.Hips | |
|---|---|---|
| XS | 70 - 75cm | 83 - 88cm |
| S | 76 - 81cm | 89 - 94cm |
| M | 82 - 87cm | 95 - 100cm |
| L | 88 - 93cm | 101 - 106cm |
| XL | 94 - 99cm | 107 - 112cm |
Socks in 4 sizes

| Shoe size | |
|---|---|
| T1 | 35-38 |
| T2 | 39-41 |
| T3 | 42-44 |
| T4 | 45-48 |
Stockings in four sizes

| Tube size | |
|---|---|
| T1 | 30-34 CM |
| T2 | 34-38 CM |
| T3 | 38-42 CM |
| T4 | 42-46 CM |
Socks/stockings with multiple sizes

| Calf circumference | Shoe size | |
|---|---|---|
| 1S | 22-30 | 35-38 |
| 1M | 30-38 | 35-38 |
| 2M | 30-38 | 39-41 |
| 3M | 30-38 | 42-44 |
| 4M | 30-38 | 45-47 |
| 2L | 38-46 | 39-41 |
| 3L | 38-46 | 42-44 |
| 4L | 38-46 | 45-48 |
Arm Sleeves

| Circumference | |
|---|---|
| T1 | 22-25 cm |
| T2 | 25-28 cm |
| T3 | 28-31 cm |
| T4 | >31 cm |
Compressport Free Belts Size Chart

| Circumference | |
|---|---|
| XS/S | 78-94 cm |
| M/L | 94-110 cm |
| XL/XXL | >110 cm |
Description
Description
The Compressport Feelfree Seamless Boxer is an ultralight sports underwear designed for maximum ventilation, support, and comfort. Thanks to the seamless construction and soft Q-skin fibers These boxers feel like a second skin – perfect for long runs, intense workouts, or everyday use.
🔥 Why these boxers are so comfortable
✔ Seamless construction – No seams, so no irritation or chafing
✔ Ultralight “second-skin” feel – Barely noticeable while walking
✔ Antibacterial Q-skin fibers – Odor-inhibiting and fresh
✔ Moisture-regulating – Sweat is quickly wicked away
Ideal for trail runners who to be on the road for long hours and want to prevent chafing.
🌬️ Optimal ventilation
Strategically placed mesh zones ensure excellent thermoregulation.
✔ Diamond mesh panels – Extra ventilation at the front, sides, and lower back
✔ Fast-drying material – Keeps you dry during intense exertion
✔ Temperature regulating – Comfort in warm and cold conditions
🎯 Support where you need it
✔ Integrated pouch – Stability during movement
✔ Targeted compression zones – Support for dynamic movement
✔ Longer pipe – Prevents rolling up while walking
✔ Wide ergonomic waistband – Stays comfortably in place
Specifications
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Type: Sports briefs/boxers
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Construction: Seamless
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Material: Q-skin antibacterial fibers
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Fit: Second skin
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Features: Breathable, moisture-regulating, odor-inhibiting
🏔️ Perfect for
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Trail running
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Long runs and ultras
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Training and recovery
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Daily use
The Compressport Feelfree Seamless Boxer combines performance, ventilation and comfort in ultralight boxers that you barely feel while running. 🚀






