Check the listing for details. Key Chain Pill Holders, Water/Humidity proof, Select: Color & Size. Color: Multicolor, Condition: New. Listed at 2.99 USD. Key Chain Pill Holders, Water/Humidity proof, Select: Color & Size Brand: Winomo or Ppfish Colors: Black, Blue, Brass, Gold, Green, Orange, Purple, Red Sizes: Large w Flat Base 2”H x 0.8”D Small w Round Base: 1.8”H x 0.7”D Light weight Aluminum container and stainless steel ring with threaded cap and cylinder and compressible washer to keep water and humidity away from contents. Can be clipped easily to key chains, handbags, golf bags, belt loops or used as a zipper pull for your coat or jacket. Work well in water parks, fishing trips, bike riding and camping. Use for Rx pills, vitamins, over-the-counter pills such as for headaches, Chia seeds for energy, Special Condiments (such as Sugar Substitutes) or For Emergency Cash Storage. If you apply a film of vegetable or mineral Oil onto the threads it will help protect the aluminum threads, prevent seizing and waterproof the seal. · Made of Aluminum · Clip on to Key Chains, Handbags, Belts & Back Packs · 1-3/4" Outside Cylinder Length x 3/4" diameter · · 1" Diameter Split Key Stainless Steel Ring with ~ 3/8" Linked to Screw Cap · Black non-metalic Washer Seal between Cylinder and Cap · Air tight and moisture proof · · Great for aspirin, cold tablets, pain medication, and vitamins · Handy keychain goes anywhere · Large: MPN: 7J165232Z5ZCL5277 UPC: 6924878289555 Small: MPN: 159320 UPC: 723740038958 USA domestic shipments are shipped USPS First Class Mail with Tracking International shipments are shipped USPS First Class International Mail with Tracking Review: 5 Stars: This little pill fob is heavy duty. My husband lost the one I got him years ago and after many trials and errors I finally found this one. He likes the weight and the size. It is perfect for carrying a couple of doses (he takes several medications) in his pocket and it is waterproof. I know it is waterproof for sure because he left it in his pocket and I washed the jeans it was in. I found it while unloading the wash and the pills were nice and dry and as an added bonus there was no damage to the pill fob. There are cheaper models out there, but I would recommend this one to everyone!