Thermacell says:

Our most compact protector, the Backpacker will quickly become essential gear for adventure. Powered by a camping gas canister (not included).

- Compact design
- Integrated Piezo starter
- Fuel efficient: 8oz canister = 180 hour runtime
- Fuel System - Works with camping gas canisters: pressurised self-sealing (iso)butane and propane fuel mix

Includes: 1 Backpacker Protector, 3 Heat-activated Mats & 1 Travel Pouch.