HP Stream 11 Pro G4 EE Case for Chromebook A flexible case?you can flip for! Protect the HP Stream 11 Pro G4 EE without breaking the bank. Our new BumpTech case enhances traditional hard clamshell cases with a shockproof bumper that wraps around the edges. The case is thin enough to allow the HP Stream 11 Pro G4 EE to fit into any charging cart, provides excellent venting to keep your device cool, and gives you easy access to all ports.