Flex Arch:Lower Excellent first-time upgrade from “boil

Excellent first-time upgrade from “boil & bite” guards

Dual-ply material features soft liner for comfort and outer acrylic shell to help your guard last

or upper/lower individual retainers

Additional impressions will be required

Flex Arch:Lower Excellent first-time upgrade from “boilBUY ONE GET ONE FREE ON ALL FLEX NIGHT GUARDS! JUST ADD TO CART! Highest level of comfort the Flex is soft throughout Strong enough to prevent damage from teeth grinding; easiest to wear Excellent first time upgrade from boil & bite guards As comfortable as night guards get, the Flex gently stretches over your teeth to provide a soft but protective barrier that prevents damage from teeth grinding. If you are a light grinder or only clench your teeth,