Our most popular spill kit comes in a bright yellow plastic bag with a top zipper. Perfect for stashing behind the seat of a truck or placing in a stuff box. This kit can be refilled but is so economical, we consider it disposable once the contents have been used. The SP2 kit is 18"Lx16"Wx6"D. This kit meets Fedreral regulation 40:CFR263.30(A)