– Provides insulation and protection for arm- 92% polyester, 8% spandex- Available in 4 sizes: Youth S/M | Youth L/XL | AdultS/M | Adult L/XLYouth Sizing- S/M – 13.5″ Length | Wrist – 5″ | Bicep – 8″- L/XL – 14.5″ Length | Wrist – 7″ | Bicep – 8.5″- Wrist and Bicep are measured around, at the un-stretched circumferenceAdult Sizing- S/M – 15″ Length | Wrist – 6″ | Bicep – 9″- L/XL – 15.5u” Length | Wrist – 8″ | Bicep – 11″- Wrist and Bicep are measured around, at the un-stretched circumference