Tension straps do sheets - 4pcs Clips tensioners elastic straps do sheets are a great gadget. They protect against the sheet from rolling and ensure that aby it is equal. The straps are flexible, at the ends they have frogs that attach under the mattress do sides or corners of the sheet. The length of the rubber bands can be adjusted za using the regulator. Instructions for use: Thread the sheet onto the mattress as usual. Then flip the mattress underneath do top. Connect the loose edges of the sheet with a tensioner so that aby frogs attach do one and the other opposite edge or on each of the four sides. With the help of the regulator, you can set the appropriate length. Gradually clip the tensioners. Flip the mattress back over, the tensioners will keep the sheet in place. Key features: Length adjustment: 50 - 100 cm Width: 2 cm Packaging 4 pcs. Possible installation in two variants(on the corners of the mattress and across the mattress) Elastic Polish Manufacturer