Tatonka Barrel M Travel Bag, Red - Lufthansa WorldShop
The Tatonka Flightbarrel is tough and spacious, and cabin legal. The bag weighs 1.2kg only and is waterproof. Mine is bright yellow and I can't miss it.
Amazon.com: Tatonka Barrel M, Black - black, 61 x 38 x 38 cm, 65 Liter : Clothing, Shoes & Jewelry