As the Rambo Underblanket but also with an integrated neck cover for extra warmth with easy Velcro closures.

With 300g of thermobonded fibrefill. They have a single breast strap with no surcingles to avoid too many straps under your horses belly when layering rugs. The Underblanket Plus is also made with a polycotton outer shell to prevent slippage of outer rug layers.