Water RescueThrowline Bag Conventional water rescue throwline. The #237 bag is constructed from UV resistant 1000/400 denier nylon. Bag has an ethafoam flotation insert and a quick release buckle on the handle strap. Contains 75' of 3/8" solid braid, UV resistant, yellow polypropylene rope (#500), which has excellent flotation characteristics, strength, and abrasion resistance. Color: Orange. Click photo for larger image.