Dense foam tablet cases are evolving. Take this latest entry from Gripcase-USA, designed specifically to fit Apple's iPad Air. It's clear that somebody has been talking to teachers, because this case is slim enough for a cart, yet strong enough to protect your iPad against a drop on a hard cement floor.

Four .5 inch holes make the iPad easy to hang from a hook or carry with a strap; plus a grooved back makes the tablet easy to hold. The entire case is lightweight and designed protect the iPad from a drop. It is made from EVA polymer that is washable and strong enough to hold up to a child's teeth. There are large ports for the speaker, microphone and it is easy to find the charger and microphone input.

The overall dimensions will fit a range of charging/syncing solution. Shield comes in black, blue, red, green or purple.