Bags of this type can often stand on their own. The green colour looks quite neat and it has a 12-litre volume.
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From Amazon
Fjallraven Greenland Shoulder Bag - Deep Forest, One Size
The product is available from £97.03 at international stores.
Trekkinn
Fjällräven Greenland 12l Crossbody Green
This product is also available at 2 unverified merchants.