Restorable with hot water or hot air; perfect for buns, ponytails, braids or pigtails. 20 piece set for long time use; can also be warn in conjunction with hairpins or headbands for other popular hairstyles. Non-absorbent feature makes it a perfect choice when swim or take a shower; durable, reusable and strong on style, offering a secure hold. JessLab spiral-shaped hair ties is gentle on your delicate hair, helping reduce damage and breakage; create fun, cute ponytail and double as bracelets when not using. Measure 3.8 cm diameter per piece; small and exquisite design for convenient carrying; great for women and children to use during exercise, workout, yoga, party and daily life.