Using this OTK Tony Kart seat is straightforward. Just install it properly in your go - kart according to the manufacturer's instructions. When it comes to choosing the right size, measure your body or refer to the size chart provided. For juniors, pick between the standard junior size and the Junior S based on the angle that suits them best. As for adults, choose the size that fits your body dimensions. When using the seat, avoid rough handling to prevent damage. For maintenance, clean it regularly with a mild soap and water solution. Don't use harsh chemicals as they may damage the seat material. Check the seat's mounting points periodically to ensure they are secure. Since this item doesn't qualify for free shipping, plan your purchase accordingly.