Parameters: Folding Replacement Bike tyre 20x4.0 MAX Inflate to 20 P.S.I. (1.4 BAR 140 KPA). Practical: The 20x4 fat tyres have multi-functional tread design with excellent off-road appearance, excellent grip and good rolling characteristics, with the ability to switch between on-road and off-road conditions. Ultra-durable: The 98/102-406 tyres are made of high quality rubber material and nylon cord technology, with strong grip and wear resistance. Compatible range: The size of the Bike tyre is 20x4.0, which will not affect the use effect. lf you mind that the mode is not completely symmetrical, you can choose to buy other exactly the same model in the shop. New soft wire technology: the tyre can be folded, easy to store and carry. After the tyre is opened from the folding mode, it is normal that it is relatively soft and can be installed normally. Please note: the steel wire part of the outer tyre cannot be completely folded after receiving it, which will lead to uneven installation. If you want to restore the original shape after disassembling, you need to gently fold or roll it according to the received state, and do not overexert Package Includes: 20x4.0 heavy duty fat bike tyre, 20x3.5/4.0 AV32mm Schrader Valve bike tube Please check carefully for the details and size before purchase.