Free Prime Shipping on Amazon | Rugged Cases Fit Over 60 Laptops & Tablets | Special EDU Pricing and Samples Available

SlimTech for Acer Chromebook 311/C721 (Clamshell)


The perfect solution for in-class protection for your Acer Chromebook 311/C721 Clamshell. SlimTech, the latest innovation from Gumdrop, provides solid bump and scratch protection within a slim form factor that’s optimized for charge carts.

Device Compatibility

Acer Chromebook 311 (C721) (NX.HBNAA.001)
(Not compatible with CB311-9H-C3KK)

Education Pricing Available

Gumdrop is proud to partner with all preferred
resellers. View a list of approved resellers here.

  • 2-piece case construction
  • Co-molded TPU bumpers on top shell for bump and scratch protection
  • PC bottom shell for additional protection
  • Easy clip on installation. No adhesive needed!
  • Textured grip areas and frosted edges for additional protection from scuffs and scratches
  • Clean design with transparent top and bottom for easy asset tagging and management
  • Lightweight and charge cart optimized with a slim and smooth form factor
  • Affordable price point


  • Width 8.45 in.
  • Height 12.2 in.
  • Depth 1.17 in.
  • Weight 0.64 lbs.
Product Specsheet

Download product spec sheet

Installation Guide
Removal Guide
Download PDF PDF Download

Get a Quick quote

Sample Request

Quote Request