Coats and Clark Thread 12 wt Outdoor Living. It is a contiuous multifialment bonded polyester thread It is ideal for the sewing and repair of sturdy fabrics and materials including indoor and outdoor upholstery and furniture, umbrellas and awnings and can even stand up to the rigors of sports gear such as tents and saddles. Created to resist almost every form of weather related abuse, including UV rays and moisture. It is available in a range of 16 colors. 3 spools per box, 200 yards per spool 60 spools per case. Machine Needle Sizes 16 or 18. Hand Needle Sizes 1, 2, 3, 4 or 5.