"Snug Fit with Stretch Material" Made with neoprene material, it fits snugly on 500-600ml PET bottles and water bottles. You can carry it around with peace of mind without worrying about it falling out. "Shock Absorption & Scratch Prevention to Protect Your Bottle" The 3mm thick neoprene provides ample cushioning, protecting your precious bottle from impacts and scratches caused by drops. "Convenient 2-Way Design" With a 2-way design for carrying by hand or over the shoulder, it can be attached to a bag or hung on a handrail. Perfect for commuting, going to school, and outdoor activities. "Material and Design" Material: Neoprene, Polyester. Stylish designs are available, from simple solid colors to cute patterns, suitable for both men and women. "Specifications" Size: Approximately 20cm height (excluding handle) x 7cm diameter, Weight: Approximately 40g. Compatible size: Up to 600ml water bottles and PET bottles. Within 8cm diameter. Accessories: Shoulder strap.