Material: 78% Nylon+22% Spandex. Color: Black+Skin Flat Size:8x17cm/3.1x6.7" can stretch Approx. 20-35cm/7.8-13.7" MAX ARM CIRCUMFERENCE: 35cm/13.7", IF YOUR ARM CIRCUMFERENCE MORE THAN 35cm/13.7" , it will be small for you. 1 SLIMMING ARM SHAPER - Improve The Look And Feel Of Your Arms With Its Wave Like Design That Massages You During Movement. Fit smoothly under your clothes to give your arms a slim look,Cautions: Wear it for 8-10 hours every time, if any discomforts happen, please take them off IMPROVE CIRCULATION - Provides Mild Compression As It Helps Simulates Your Blood Circulation In Your Upper Arms To Improve Endurance. Accelerate to burn calorie,Suitable Crowd: people with the fat arms,Absolute with great value COMPRESSION SUPPORT - Helps Prevent Saggy Arms From Shaking Around While Walking With The Compression Support Of These Sleeves. The best time to use: after the bath, before wearing the cloths, before or after the exercise.Recommended Usage Frequency: 4-6 hours daily