Ventilation Hole Design The retainer case with 10 vent holes on the top that keep your mouthguard and retainer clean and dry Magnetic Closure Retainer holder case with a magnets at the edge and when you close it they just attach to one another The textured liner helps minimize internal sliding and movement Easy to Clean You can clean the denture holder case with warm water and dish soap or just throw it into your dishwasher Compact Portable The night guard case is 12 oz 335 x 335 x 079 Its a slim retainer case that fits easy in your purse Great for traveling comes with a travel bag Textured Lining The textured bottom of retainer case holds the retainer in place and reduces slipping and shifting preventing accidental bumps