Features:Updated from last season, it offers improved functionality, more consistent ignition and enhanced compatibility with more fuel canister brandsHeat from fuel canister activates a repellent mat and disperse the allethrin insect repellent to create a 15 ft. zone of protectionEvaluated by the EPA for safety and effectiveness, allethrin insect repellent is the synthetic form of a natural repellent found in chrysanthemum plantsScent-free and DEET-free; no messy sprays or lotions; no open flame; no smoky candlesEach repeller mat provides up to 4 hrs. of protection; comes with 4 repellent mats and a water-resistant travel bag; additional replacement repellent mats sold separatelyRuns for up to 90 hrs. on a 4 oz. backpacking stove fuel canister; canister sold separatelyWeighs just 4 oz. (114g) and works up to 7,000 ft. of elevationMeasures 3.8 x 2.6 x 2 in. (97 x 67 x 50mm), so it won't take up much space in your packUse pressurized self-sealing (iso)butane and propane fuel mix only; does not work with 100% propane; do not use with refilled canistersAllow gas to flow for 5 sec. before clicking the piezo ignitor; repeller is only compatible with valves designed to the EN417 specification