Air-Tite coin capsule holders are made from acrylic plastic with a non-yellowing agent, a process that results in a final product that is hard, crystal clear, and smooth to the touch. The cover and base snap together firmly to form a perfect seal enclosing the ring and securing your collectible. Capsules are PVC free, archival safe, and suitable for extended periods of long term coin or bar storage. The rings are made from an inert polyethylene that provides an additional barrier against air contamination, secures the coin in the holder, and provides an attractive border. Coin capsules are securely packaged un-assembled within layers of foam to protect them during shipment. Coin capsules are made in the USA.