At Spanish brand Buff, almost all products are one size. For example, the neck warmers, which we often call a "Buff," are available in one size, except for children's models. Buff does use two sizes for its caps. You can find out which one you need in the size chart below.
It's best to measure your head with a tape measure around the thickest point. Don't hold it too tight.
Size chart Buff
| Type | Mate | Head circumference |
| 5 Panel Go Cap | S/M | 53 - 57 cm |
| L/XL | 57 - 61 cm | |
| Speed Cap | S/M | 53 - 57 cm |
| L/XL | 57 - 61 cm | |
| Pack Speed Cap | S/M | 53 - 58 cm |
| L/XL | 58 - 62 cm | |
| Pack Sahara Cap | S/M | 54 - 57.5 cm |
| L/XL | 57.5 - 62 cm | |
| Go Visor | Unique | 53 - 61 cm |
| Pack Cycle Cap | Unique | 53 - 57.5 cm |
| Pack Speed Visor | Unique | 53 - 61 cm |
| Pack Trucker Cap | Unique | 57.5 - 63 cm |
| Pack Merino Fleece Cap | Unique | 53-61 cm |
| Baseball Cap | Unique | 58 cm |
| Trucker Cap | S/M | 53 - 57.5 cm |
| L/XL | 57.5 - 63 cm | |
| Summit Cap | S/M | 54 - 57.5 cm |
| L/XL | 57.5 - 61.5 cm | |
| Military Cap | S/M | 54 - 57.5 cm |
| L/XL | 57.5 - 61.5 cm | |
| Pack Summit Cap | S/M | 53 - 57 cm |
| L/XL | 57 - 61 cm | |
| Travel Bucket Hat | S/M | 54 - 56 cm |
| M/L | 56 - 59 cm | |
| Adventure Bucket Hat | S/M | 54 - 57.5 cm |
| L/XL | 57.5 - 62 cm | |
| Sun Bucket Hat | S/M | 54 - 57.5 cm |
| L/XL | 57.5 - 62 cm | |
| Explore Booney Hat | S/M | 54 - 57.5 cm |
| L/XL | 57.5 - 62 cm |
BUFF | Neckwear | Original Ecostretch | UTMB Edition
The BUFF Original Ecostretch UTMB Edition is the versatile accessory you can use anywhere, anytime. Whether it's sunny, cold, windy, or warm – this limited edition BUFF, made for the UTMB World Series, adapts to every situation.
Made of recycled plastic bottles, the Ecostretch offers excellent UPF 50 sun protection, is seamless, stretchy in all directions and therefore super comfortable. You can wear it on more than 12 different ways to wearAs a scarf, hat, headband, wristband, or even a face mask. The perfect companion for training, racing, and everyday use.
Don't leave home without this classic – now in an exclusive UTMB version!
⭐ Key Benefits
- 🌍 Durable – made from 2 recycled plastic bottles
- ☀️ UPF 50 sun protection – certified by the Skin Cancer Foundation
- 🌀 Multifunctional – more than 12 ways to wear
- 🧵 Seamless && elastic – stretches in all directions, without irritation
- ❄️ All-season – suitable for warm, cold, windy and sunny weather
- 🔥 Limited Edition – official UTMB World Series edition
📊 Specifications
- Brand: BUFF
- Model: Original Ecostretch – UTMB Edition
- Material: 95% recycled polyester (2 plastic bottles), 5% elastane
- Protection: UPF 50 (UV protection)
- Construction: Seamless, one piece
- Usage: 4 seasons, multifunctional
- Edition: Limited – UTMB World Series
🎯 Perfect for
Trail runners and outdoor enthusiasts who want to durable, versatile and stylish accessory search – and be a fan of the UTMB World Series.
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