Posted the 10" a while ago and now 2 other sizes have come down to same price.
17" is £14.97 on same link - still pretty good price and a 12" in silver for £10.22.
I've linked to a search page.- hope it works OK.
quoted from site -
Give your 15.4" laptop the protection it deserves with this highly stylish Crumpler The Gimp 15" Laptop Sleeve! Constructed out of thick, tough and waterproof neoprene with nylon stitching, this sleeve is ideal for safeguarding your notebook from everyday knocks and scrapes. Use it indoors, or as an extra skin with your existing laptop case!
The Crumpler The Gimp 15" Laptop Sleeve also features the Zooper Zong Zip with protective seal, which avoids scratches to your computer's casing. Offering high quality manufacturing and great value for money, keep your laptop covered with The Gimp 15" Laptop Sleeve!