Abstract: An adjustable strap is disclosed, as is a combination of the strap with a boat. The strap comprises a ring, a longitudinally extending first fabric strip having cooperating "Velcro" portions for releasably locking a first end of the strip in each of a plurality of positions, a snap fastener and a longitudinally extending second fabric strip. The first strip has a free end which can pass through the ring and releasably engage an adjacent length of the strip to form a loop whose circumference varies. The second strip of fabric is attached to the first strip and to the snap fastener. The length of the second fabric strip is varied from strap to strap so that several of the straps are admirably suited to fasten a roll of a boat cover in a stowed condition to a boat having a plurality of snap fasteners positioned generally in aligned relationship with one another to engage cooperating fasteners on the cover.