Credit to pricehipster, RRP seems to be $25.
From the website:
Designed for daily durability
Help prevent minor scrapes and scratches on your device with a protective sleeve.
Easy to carry
Carry the compact sleeve by hand with the double hand straps or slip strap, or slide it into your backpack.
Get a one-year limited warranty.
Product color: Black
Dimensions (W x D x H) : 33 x 5 x 23 cm (13 x 2 x 9 in)
Warranty: One-year limited warranty.
What's in the box: HP 11.6-inch Education Sleeve