Sherpa Ultimate Small (16" D x 10" W x 8.5" H) Medium (18" D x 11" W x 10.5" H) Large (20" D x 11.75" W x 11.5" H) Features Include: *Mesh panels for ventilation *Top and side entry *Roll up flaps on three sides for the ultimate in privacy *A convenient should strap and large accessory pocket *A quilted texture for the ultimate fashion statement