Features： 1、Strong filtering ability, removing harmful substances such as red worms, bacteria, viruses, and heavy metals in the water. 2、Made of food-grade TPU material and baby-grade silicone suction nozzle, safe and environmentally friendly. 3、Lightweight, foldable, reusable, and lightweight. 4、Easy to operate, convenient for hydration. 5、For outdoor sports such as running, hiking, Cycle, mountain climbing, and emergency use in special scenes such as floods, hurricanes, forest fires, earthquakes. Specification： This survival water filter redefines the way you get clean water for adventure and emergency preparation. As the companion for outdoor exploration, it is designed to meet the needs of hikers, campers, and backpackers, providing clean and safe drinking water wherever you go. Features: Strong filtering ability, removing harmful substances such as red worms, bacteria, viruses, and heavy metals in the water. Made of food-grade TPU material and baby-grade silicone suction nozzle, safe and environmentally friendly. Lightweight, foldable, reusable, and lightweight. Easy to operate, convenient for hydration. Suitable for outdoor sports such as running, hiking, Cycle, mountain climbing, and also suitable for emergency use in special scenes such as floods, hurricanes, forest fires, earthquakes. Specifications: Material: Food-grade TPU, baby-grade silicone Colour: Transparent/blue(Optional) Capacity: 400ml/500ml/1L(Optional) 400ml Weight: 41g/1.4oz Bottom Bag Diameter: 6cm/2.4in Bag Height: 19cm/7.5in (excluding lid) Including Lid Suction Nozzle: 24cm/9.4in. 500ml Weight: 50g/1.8oz,  Bag Height: 21cm/8.3in (excluding lid),  Including Lid Suction Nozzle: 26cm/10.2in. 1L Weight: 59g/2.1oz,  Bag Height: 22cm/8.7in (excluding lid),  Including Lid Suction Nozzle: 28cm/11in. Package list: 1 x Filter Soft Water Bag Package List： 1 x Filter Soft Water Bag