The Sawyer SP131 kit includes the following items:
The Sawyer SP131 Squeeze Water Filter Bottle System is a portable filter system that can be rolled up, resulting in extra portability and versatility. Simply fill up the pouch with water from any tap or outdoor location and then attach the Sawyer squeeze filter to instantly purify the water. You can drink the water directly or pour it where needed. This emergency water filter can also be attached onto most threaded water bottles.
Sawyer SP131 Squeeze Water Filter Bottle System specifications: