May 20, 2026
Description
Sheet Keeper – Simple Locking System for Secure Bed Sheets
Tired of fitted sheets slipping off the corners of your mattress and needing constant adjustment? Sheet Keeper is a compact 3D-printable locking system designed to help keep your bedding tight, secure, and in place.
Sheet Keeper uses a simple two-piece slide-lock design:
• Position the base beneath the sheet at the mattress corner
• Pull the sheet over the Sheet Keeper
• Slide the locking piece over the two raised tabs on the base
• The fabric becomes locked securely in place
Features
✔ Two-piece slide-lock design
✔ Helps prevent sheets from pulling loose
✔ No elastic straps or complicated hardware
✔ Quick installation and removal
✔ Compact, clean design
✔ Low material usage
✔ Works well for active sleepers, kids, guest rooms, and deep mattresses
Standard Slides are designed to provide a secure grip for most sheets and bedding setups.
Wide Slides are included for users who find the Standard Slides too tight or difficult to install. They provide additional clearance and may work better with thicker sheets, mattress toppers, or bulkier bedding. Because bedding materials vary significantly, you may want to experiment with both versions to find the best fit for your sheets.
In my testing, the Wide Slides work well when securing both the fitted sheet and top sheet together, but they may be too loose for some thinner single-sheet applications.
If you try the Wide Slides, feedback is always appreciated!
License:
Standard Digital File License
ninemind
