Nylon sheet fasteners are just what i needed. They hold very securely. Plastic clenching system may not be as durable as metal ones.

These sheet straps provide a simple and effective solution to keep your sheets firmly in place, preventing them from slipping or bunching up during the night. These sheet fasteners creates the appearance of a freshly made bed all the time, even after ...  Read More

The idea is to get the whole assembly of straps underneath the mattress. When all of the straps are attached just start tightening the adjustments until there's enough tension to keep the sheet in place. You can also tighten them up.

Straps are very adjustable so you can choose how elastic you want them to be. Even works on memory foam mattresses. Has metal teeth for great grip. Stretch is adjustable.

Put them on 1 time went to change my sheets and the clip on 1 side fell apart. They also pinch the fitted sheet very tight that i was afraid of it ripping. The * are very poorly made and break very easily.

These comes with a upgradable 2 year warranty but * if i see how they make any money. Didnt last 2 months. Come on america we need to get back to only supplying american made goods that are worth a *.