【S+M Set & Ice Pack】 ・S Size Ice Pack * 1 (S-6inch/Φ15.0cm/350ml/75g) ・M Size Ice Pack * 1 (M-9inch/Φ23.0cm/2000ml/100g) Outer Fabric: 100% Polyester Lining: PVC (Polyvinyl Chloride) Cap: ABS Resin Packing: Silicone Rubber Mouthpiece: Polypropylene & Aluminum ※ Adding a little salt to the ice pack can extend the cooling time. 【Moisture-Proofing to Prevent Condensation & Water Droplets】 Using the latest high technology, the back of the ice bag is made of high-quality PVC material, which is moisture-proof and prevents condensation & water droplets on the surface. The cap with a silicone ring prevents water leakage, allowing for enjoyable use. ※ When using in environments with large temperature differences between indoors and outdoors, it is recommended to use a 1:1 ratio of water and ice (and it is recommended to wrap it in a towel, etc.). 【Leak-Proof Design & Wide Mouth】 The design prevents gaps between the water inlet and the lid. The water inlet lid has a rubber packing, and the grip-friendly shape with unevenness around the lid allows for secure tightening, eliminating worries about water leakage even during intense sports. 【Icing and Hot Bag】 The ice bag (ice pack) is an ice bag that allows for easy icing (cooling) with ice and cold water, perfect for cooling down after sports. It fits perfectly to various parts of the body and is easy to cool. The approximately 5cm (just right) large water inlet is designed to easily accommodate large ice cubes. Large ice cubes can be inserted without any problems. ※ To prevent damage to the inner coating, please round off any sharp edges of the ice before inserting. When not in use, it can be folded slim for convenient portability! ⭐ Immediate purchase OK! Free Shipping ⭐ Please check the actual product photos for the condition of the product. #Nao's Product List is Here ✨ ☜ (38-66) Ice Bag, Ice Pack 【S+M Set】 Icing Bag, Large Mouth, Leak-Proof, Ice Bag, Sports, Wrist, Elbow, Knee, Joint, Summer Heatstroke Prevention Goods, Reusable, Snow White