SIRUI W Series Waterproof tripods expand the capabilities of outdoor photographers and videographers like no other tripod. While most tripods warn against use in or near water and sand, the W Series welcomes it! The SIRUI designed WPS Waterproof Sealing System has a series of waterproof rings that prevent water from seeping into the tripod leg tubes and locks and causing damage. The SIRUI designed waterproof leg locks incorporate waterproof and leak-proof materials used in the automotive industry. The rubber locking components firmly grasp the legs without any gap when they are tightly locked - preventing water, dust or small particles from entering the legs or the locking system. This waterproof (not just water resistant) system lets you safely shoot in extreme environmental conditions (also ideal for use with spotting scopes and binoculars). Equally impressive is SIRUI's ability to extend and contract the legs as smoothly as their standard models. And with 1/2 twist leg locks, setup and break down is fast and easy. Using the highest quality materials and precisely manufactured leg tubes lets SIRUI achieve uncompromising stability. The SIRUI W-2204 extends up to an impressive 70. 9 in. (1800 mm) - vital when shooting in deeper water or to keep your equipment away from splashes and salt spray - while folding down to only 20. 5 in. (520 mm). It weighs just 3. 7 lb. (1. 7 kg. ), but holds up to 39. 7 lb. (18 kg). The redesigned Leg Angle Locks make adjustments faster and easier