Buy from Amazon : http://www.amazon.com/gp/product/B0001GJCIY?tag=wayofcats-20

Canon LP1022 Soft Lens Pouch for EF 75 to 300mm f4 to f5.6 IS Lens

Protect your precision Canon lens from dust and the elements
Bag-like case with soft gray exterior fabric
Tough leather bottom
Drawstring closure at top
See product description for lens compatibility