Now accepting orders for this and other Autism Awareness products! A portion of proceeds from these items will be donated to OAR (Organization for Autism Research).An essential layer for any Game Day! Our New Arm Sleeves are made with sweat-wicking technology to help keep you dry and comfortable while in the field. Benefits: Sweat-Wicking fabric helps to absorb sweat and help keep you dry and comfortable. Form-fitting, flexible sleeve provides abrasion resistance. Provides insulation and protection for arm 92% polyester, 8% spandex Available in 4 sizes: Youth S/M | Youth L/XL | Adult S/M | Adult L/XL Youth 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 circumference Adult 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