- Made of high quality acrylic fibers, soft, warm and durable. Package contents: 5 pieces Size: outer ring diameter 31cm, inner ring diameter 11cm Thick, quality and stretchable material fits oval and round toilets well . 3. The best way to stay warm and comfortable all year round, say goodbye to icy toilet seat covers, not just for winter. 4. To install: place the cover with the ring towards the underside of the toilet seat, pull the cover through the hole, then stretch the cover over the toilet seat. 5.Product style is subject to the main picture (other pictures are for display effect only)