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ExOfficio Sol Cool Arm Sleeves Wristband
Thumb loops
Elastic finger loop inside cuff
Silicone grip at inside bicep
The sol cool arm sleeves are rated UPF 50 for optimal sun protection, and have built-in air conditioning using xylitol, which is woven into fabric fibers to create a cooling sensation on contact with moisture. They also feature Silicone grips at the inside upper arms, thumb loops, and an elastic finger loops to keep sleeves secure.