Easiest & most comfortable way to carry a bear resistant food container. Fits easily with other trail gear in bags 45L or larger. No need to strap or attach outside of pack. No risk of loss during hike. Reduces likelihood a bear will enter your camp. Contains food odors & restricts access. Prevents warping. Pressure relief valve adjusts air pressure every 1000 feet. 18" tall, 9.25" round on top & 6" round on bottom.