[Patent Pending No-Clip Lock System - Unbeatable Hold] Forget flimsy clips or straps that snag sheets! Our exclusive bed sheet holders uses industrial-strength elastic straps and 360° wrap-around grips to lock sheets tightly without damaging fabric. Perfect for sleepers, adjustable beds, or heavyweight mattresses-zero slippage guaranteed. [Universal Fit for All Mattresses with Adjustable-Height] Ditch fixed-height grips that FAIL! Our Upgraded Sheet Straps works seamlessly with ANY bed(2.7in+)-kids' low-profile beds, Hospital/RV mattresses, Standard beds, or Plush pillow tops. One tool rules all - Ditch mismatched grippers for different beds! [-Free Corners] No gaps = No slip! Our flex-edge design auto-molds to round, square, or jagged mattress corners for 360° edge seal. Ours Bed Sheet Holders like a vice! [No Damage for Sheet] Gentle on Sheets, Tough on Slippage! Our no-clip, soft straps grip securely without snags, tears, or marks - even on silk, bamboo, or delicate linens. Cheap grippers damage sheets over time. Ours protects your investment! [No-Flip Magic - Installs in 10 Seconds!] No wrestling, no flipping - Slide the base under mattress corners and done. Perfect for: Heavy beds (no lifting!), Seniors/solo setup (no strength needed) and Late-night fixes (works on made beds!). Rage-quit old grippers that demand mattress acrobatics. Ours sticks, locks, and forgets! Color:Light Gray Material:plastic Package Contents: 4 * Adjustable sheet holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.