Acme Made Skinny Sleeve XS (StretchShell Neoprene) Grey/Orange AM10521 Unique secure storage for Microsoft Pen Ultra-thin design wont add bulk to another bag. Our unique StretchShell neoprene is both water and stain resistant. Zipperless closure wont scratch the Microsoft Surface Pro 4. Sewn-in reinforcement on both sides for extra protection. Stylish elastic band keeps the Microsoft Surface Pro 4 securely within the sleeve.