The TREK is designed for walking your paddle board, windsurfer or small kayak. It is NOT designed for use with a bike. The bike version is the Evolution. The TREK carrier model comes with the strap handle and relieves the burden of carrying the weight of your board, paddle, gear and frees up one of your hands. The unit is engineered with a marine grade aluminum axle, stainless steel fixtures and never go flat tires. We also enhance your comfort with a unique rubber handle that covers the nylon strap handle.