The Rime is an excellent indoor rug if you wish to do without doubling up rugs during the winter months but still wish to achieve the Back on Track-effect. RIME has an interior lining of polypropylene infused with ceramic particles as well as an insulating filling of 160 grams. The exterior fabric is made of polyester. The rug is seamless and is fitted along the spine in order to achieve close body contact with the interior ceramic lining all along the back. RIME has back straps, double chest buckles (pop closures), crossing belly surcingles (pop closures) and a tail strap. RIME is breathable and is water-resistant up to a degree.