Constructed from 20mm square steel tube powder coated frame, upright from 22mm aluminum tube and heavy flat bar feet are made of steel to ensure stability. Crossbar protected with the soft sleeve, which when struck pivots forward. Ideal for training and school use. Height selection by snap locking method, 5 settings - Junior 45cm to 68cm Senior Spring Roll Back Hurdle Senior: 76cm to 106cm. 20mm square steel tube. Powder coated frame. Upright from 22mm. Heavy flat bar feet. Crossbar protected with soft sleeve. Ideal for training and school use. 5 Height Settings.