Precise fit, secure fit Designed for Stanley 40 oz: The Stanley 40 oz bottle fits the size and shape of the Stanley 40 oz bottle perfectly, preventing it from shaking or slipping, and ensuring it is stable to carry. Shock absorbing: High-quality neoprene or neoprene material effectively cushions the bottle from external shocks and protects it from bumps and scratches. Highly efficient thermal insulation, long-lasting heat preservation Dual-layer heat insulation structure: the inner layer is made of high-density heat-insulating cotton, and the outer layer is made of waterproof fabric, which significantly slows down the change of water temperature, keeping the water cold in summer and warm in winter. Anti-scald design: the outer layer of the material to isolate high temperature, to avoid direct contact with the kettle scald, enhance the safety of use. Multi-functional storage, convenient for travelling Multi-pocket design: Equipped with front pockets, side pockets or hidden zip pockets to store mobile phones, keys, cards and other belongings, freeing your hands. Adjustable shoulder strap: the length of the shoulder strap is freely adjustable, supporting one shoulder, crossbody or handheld, meeting the needs of commuting, outdoor, travelling and other scenarios. Usage Scenarios Outdoor adventure: Protect the water bottle when climbing or hiking, and store energy bars, first aid kits and other small items. Daily commuting: shoulder or crossbody design, free your hands, easy to deal with underground, bus and other crowded environment. Travelling: folded and compact, can be easily put into the luggage or backpack side pocket, hydration at any time.