No batteries or chemicals are needed for operation.
Sawyer Mini Water Filtration System Outdoor Camping Trekking
Sawyer SP107 - Mini Water Filtration System - CAMO - Portable - Lightweight
Sawyer SP128 - Mini Water Filtration System - Blue - Portable - Lightweight
Sawyer Mini Water Filtration System Single Pack Hiking, Camping, Emergency
Sawyer Products Mini Water Filtration System
Sawyer Mini Water Filtration System Filters Up to 100,000 Gallons
