TANK_® M1S Athlete Kit

Works great and the swivel feature is must have. I can't imagine straight line models would be a hassle in some scenarios. I have a 400ft black top driveway with some contours up and down gradients and another area with a large turn around area plus optional sidewalk navigating through a Shed overhang to a steeper uphill sidewalk. Its nice to have various levels of resistance and adding weights. This put my drag carpet type sled to shame and much nicer to put on a belt and walk backwards, forwards, grab some D-handles for rows or reverse flyes, etc... Using for past 3wks has already helped my times on the Rogue Echo Bike. I made a simple plywood caddy to put on the main frame where 45's sit and makes a nice spot for the straps, etc... to tag along and keep items in one place.