Height adjustable in 1″ increments. Can be used in the anterior and posterior position. Swivel casters can be locked to non-swivel. Variable resistance to control the speed of the wheel’s rotation. Brakes to lock the wheels to prevent the unit from moving. Directional lever allows both forward and reverse mobility or only forward mobility. Accessories mount tool-free onto the frame and can be removed or added according to the individual user’s needs and abilities. Junior and Youth Trekkers fold easily. Spec. TK 1000 Product Size Tyke Color Orange Product Adjustable Height 15″ – 18.5″ Product Outside Dimensions 23″ (W) x 34″ (L) Product Width Between Handlebars 12.5″ Product Weight 14 lbs. Product Weight Capacity 75 lbs. TK 2000 Product Size Junior Color Green Product Adjustable Height 21″ – 26″ Product Outside Dimensions 26″ (W) x 34″ (L) Product Width Between Handlebars 17″ Product Weight 17 lbs. Product Weight Capacity 150 lbs. TK 3000 Product Size Youth Color Blue Product Adjustable Height 29″ – 39″ Product Outside Dimensions 27.5″(W) x 38″ (L) Product Width Between Handlebars 18″ Product Weight 22 lbs. Product Weight Capacity 200 lbs. Carton Shipping Weight (TK 1000) 22 lbs. Carton Shipping Weight (TK 2000) 25 lbs. Carton Shipping Weight (TK 3000) 31 lbs.