WARRANTY&SERVICE: No-hassle 6 Months Warranty. For any issue, just contact with us. We will reply within 24 hours. ANTI-ALLERGY DESIGN: Held up extremely well with no signs of wear, Not itchy as the original silicone band irritate the skin, Fits 5.2-9.2 inch wrist width. BREATHABLE&FAST-DRYING: 24/7 feel soft mesh, 4000+ holes nylon woven lets sweat out &air in, does not feel sticky when sweaty. HOOK-AND-LOOP FASTENER DESIGN: 5-pcs fasterners are secure and durable to anchore by the attachment loops and easy to adjust according your wrist size not worry about falling off. INGENIOUS NYLON MESH DESIGN: Dense loops provide soft cushioning while allowing moisture to escape, on the reverse side, sweat-absorbent suitable for the training and sports.