1. Material: elastic diving material 2. Hand strap type 3. Elastic and stretchable 4. It has the effect of keeping warm and cold 5. Prevent the cup from scratching and falling 6. Strap rope length: 70cm-120cm 7. Size: 420ml: 15.5x6.5cm, 550ml: 18.5x6.8cm, 750ml: 19x8cm, 1000ml: 21x8cm, 1500ml: 23x8cm
