Design idea Braided nylon loop upgrades nylon bands in put on, One-hand adjustable, Precise Fit. Magnetic Clasp Unique Magnetic Clasp design creates an elegant look, and keeps your watch snugly to your wrist for a better workout experience. Quality materials Made of stretchy nylon, breathable and washable. Soft and comfortable feel brings a good time all day. Significance Anti-allergy, heavy-duty, lightweight design features an always-on 24/7 wearing, improving the precision of enhanced recovery timer and workout recommendations based on your sleep and wellness data