Necknix Haven CO & Gas Detector Buy More Save More:4-Pack Haven Detector Provides gentle upper-body support to

Provides gentle upper-body support to straighten your spine and prevent slouching from the very first wear

odorless foam and fabric

Lightweight and pocket-sized

and control - naturally and effectively

Its adjustable straps ensure a secure and comfortable fit for different body parts

Necknix Haven CO & Gas Detector Buy More Save More:4-Pack Haven Detector Provides gentle upper-body support toIntroducing: The Haven CO & Gas Detector Necknix is a professional grade detector specifically designed to show you real time CO, natural gas, and propane levels starting at 0 PPM. It's an easy to use, accurate device that anyone can install in 30 seconds no ladder, no tools, no electrician. Keeping a Haven in your home is one of the most important decisions you can make for yourself and your family. Because the silent killer doesn't give warnings.