Polyester,SpandexPull On closureMachine WashGreat Material: Made of 92% polyester and 8% spandex, providing soft and cooling hand feeling, They are breathable, light weight, sweat-absorbing, stretchy and durable, easy to wash. The cooling arm sleeves are with good elasticity, which allow you to exercise flexiblySun Protection: UPF 50+, the sun protective arm sleeves can effectively block 99% UVA/UVB rays, which likes the second skin, will protect you from sunburn, freckles, dark spots, peeling or other skin problems. No worrying about the exposure to the sun in hot summer or winterPractical Design: each side of the sun shawl arm sleeve is designed with a Thumb hole, which allows your Thumbs to move flexibly and make the shawl fix on your body; The cooling arm sleeves covers the shoulder and arms with sun and a little compressionWidely Range Application: this sports arm sleeve can be used as casual clothes accesory to match a dress,cami top or vest. Beside they are suitable for scrubing,golfing,running,riding,hiking,biking, climbing,jogging,driving,travelling,surfing,fising,etc