Frequently Asked Questions

Here are a few questions we’re asked about LenzLock™ holders. If you have others, send us an email at and we’ll be happy to answer them!

Q: What are LenzLock™ holders?

A:  LenzLock™ holders are designed to safely hold your glasses securely to clothing or hats, preventing loss during various activities.

They are constructed of durable thermoplastic polyurethane rubber with strong neodymium rare earth magnets.

Q: How do I install LenzLock™ holders?

A:  Installation and removal are easy! 1) Carefully separate the top and bottom plates of the holder, avoiding the stainless steel "gripper teeth" that prevent sliding. 2) Position the half with the "loop" where you want it on the top side of your hat or garment. 3) From the under side, position the other plate (without the "loop") under the top plate and they will pair together. Repeat the process on the other side of your hat.

To remove or reposition, just carefully pull the plates apart and use again!

Q: Can LenzLock™ holders be used with any eyeglass style?

A:  Yes! LenzLocks are compatible with all frame styles of eyeglasses, sunglasses, and reading glasses. 

Q: Are there any safety concerns with LenzLock™ holders?

A:  Due to the strong magnets, it is not recommended for people with pacemakers or similar devices to use the holders. They also pose a choking hazard and should be kept away from young children.


Not recommended for use by people with pacemakers or other electrical implants. Keep away from magnetic media, such as computer discs, credit cards, and tapes to avoid damage


Choking hazard – small parts. Keep away from children under 6. Ingested magnets can stick to internal organs and affect electrical implants. Seek immediate medical attention if swallowed or inhaled. Failure to follow this warning could result in serious injury or death.

© 2022-2024 Blob Products, LLC All Rights Reserved • LenzLock™ and ShadeStays® are trademarks of Blob Products, LLC • U.S. Patent #9,565,884