The Collins Sleeve Plus is the optimal home for Surface 3 and accessories. Designed in partnership with the Microsoft Surface team, this sleeve is custom-fit for Surface 3 with a dedicated slot for Surface Pen. A front pocket with magnetic closure provides secure yet immediate access to your mouse, charging cable and phone. HDF PROTECTION SYSTEM The patent-pending HDF Protection System is a lightweight cradle system that wraps devices in a layer of high density foam and suspends devices in a u-shaped cradle within the bag or sleeve. Brenthaven designers observed that devices are most vulnerable to damage when they come in contact with floors, tables, or other hard surfaces while being set down or accidentally dropped. The HDF Protection System solves for that vulnerability by enveloping the device in padded foam and creating as much space as possible between the device and the bottom of the bag or sleeve. - FFitted external slot for Surface Pen - Front pocket with magnetic closure for small accessories - Sophisticated chambray body material