Truly an ingenious accessory for the Bonk’er Classic, Bonk’er Extreme, and Bonk’im, these Velcro straps ensure that any consumer can fit their Bonk unit of choice to their bed securely, no matter what bed they own. We found it particularly difficult to use the Bonk’er on our Select Comfort bed due to the height of the bed’s base and its split chamber design. Once the Base Straps were wrapped around the Bonk’er base and secured to the bed frame, the issue was instantly resolved!