The patented plastics lid meets the CPSC 16 CFR Part 1700.20 requirements, with certification taking about 10 months to acquire. It is a two-piece design, with one element attaching to the seam of the can and the other rotating to line up arrows that will release the lid from the can.

The plastics element supplied by N2 can either be child-resistant or a standard over-cap. The company also provides plastics cans for those who wish to see the product.