"Stake out your own bug-free zone with the Thermacell Backpacker Mosquito Repeller. This easy-to-use mosquito-repelling unit attaches to any isobutane/propane fuel canister to create a 225-sq.-ft. zone of protection for your outdoor fun. Efficient design uses fuel that most backpackers and campers already have to heat bug-repelling mats, running up to 90 hours on a 4-oz. fuel canister (not included). Built-in piezoelectric starter for match-free starting. Safe to use around all your gear. Water-resistant nylon carry pouch. Includes appliance and 3 repellent mats. 3.82""H x 2.64""W x 1.97""D. Weight: 4 oz.Manufacturer model #: MRBPR. Easy-to-carry, easy-to-use bug repelling system for outdoorsmen Creates a 15'L x 15'W bug-free zone Uses common camping fuel canister Efficient: runs up to 90 hours on a 4-oz. fuel canister (not included) Lightweight: just 4 oz. Built-in piezoelectric starter for match-free starting"