UV Stable and Weather Resistant. Suitable for indoor and outdoor use. Each mat measures 50cm x 50cm (20" x 20"). 12 Mats covers 3 Square Metres. 81 stems per mat. Made from commercial grade resin and high quality plastic so will not go brittle in the frost like some other products on the market. Each stem is up to 10cm (4") in length. The look of a real green wall but with no maintenance. Easy to clip multiple mats together for larger areas. Can be cut to size and shape. Flexible, can be used on any surface (even curved). Instant Privacy with a very dense coverage. Easy to mount on a fence, trellis or wall. 4 mats = 1 square meter All measurements approximate.