Buy Triform Notebook Cover and give protection to your field essentials from 911 gear - Canadian Law Enforcement Supplies, Corrections supplies, and Security supply store. It can hold your standard 3.5” x 5” notebook. The notebook cover is perfect for all aspects of Law Enforcement, Security, and all the other Protection Services. The cover is constructed of black nylon with a flexible polymer insert to allow the cover to bend in your pocket. For more information, visit our website!