Momentum Mats - Momentum Mats Merry Christmas 29 in. x 17 in. Coir and Vinyl Door Mat 12102 - Shop for Holiday Decorations at The Home Depot. Made of natural coir and vinyl-backed for stability and to prevent movement. Our festive holiday door mat makes an attractive and durable addition to any porch or patio area. Wonderful for the holidays and all winter long.