EZ Out Safety Stirrups High quality aluminum stirrups with rubber grip tread and spring loaded outside release for safety. When pressure is applied to outside of each stirrup, like in a fall, the side of the stirrup will open all the way up allowing the foot to be released. No way to get hung up in these stirrups. The easy way out of a bad situation! Sold in pairs. Dimensions: Adult size (5" x 5" inside measurement, 7" outside height, 3 1/2" x 1 1/4" tread, .9 lbs.) 3" Neck. Youth size (4 3/4" x 4 1/4" inside measurement, 6 1/8" outside height, 3" x 1 1/4" tread, .7 lbs.) Choose 2 1/2" or 3" Neck size. Features: Aluminum stirrups Rubber grip tread Side of each stirrup opens when pressure is applied to release your foot