FOR DAREDEVILS. Little Joe is made for kids. The tread fits a mountain bike and still rolls well on the road. Little Joe is light. As a folding tire it really saves weight on the bike. Most of all in size 37-406. Little Joe is safe. The K-Guard and the 50 EPI carcass protect against punctures. ETRTO: 50-406 Inch: 20x2.00 Wheel Size: 20 in Seal: Tube Bead: Folding Version: K-Guard Compound: Endurance Color: Black+Reflex Epi: 50 Load: 75 kg Max Bar: 4.5 Bar Max Psi: 65 PSI Min Bar: 3 Bar Min Psi: 45 PSI