The flex support is an easy way to support your cover if venting is not required. The rubber sides are designed to "mushroom" down to match your cover's angle, dispersing the weight and protecting it from rips or tears. This is a great alternative to snap or swedge tips! For professional shops: The support is made to sew directly into the cover. This will help keep the Flex Support in place, giving your customers an easy, fixed location to tent their cover. For consumers: This can also be used without sewing in place and is a quick easy alternative to snap or swedge tips. Simply attach it to the top of your support pole and firmly tent you cover.