Indeed. A Yoshida Porter "Jam" Messenger Bag my GF gave me for my birthday a few months past. At first I wasn't too hot on the whole stonewashed PVC thing but it wears really well and is absolutely perfect for everything I throw at it.
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Love Porter - such great value! I got a nice Porter tote at the Kura Chika store at Elements Mall in Hong Kong. Same colour scheme as your messenger. Just needed a solid, roomie yet stylish bag to carry my textbooks and readers to uni.
Here's mine: PORTER / SHINE/TOTE BAG(ƒg[ƒgƒoƒbƒO) - ZOZOTOWN