It's the OMM Jirishanca that I have, and hope to fit everything into, good sturdy sac and comfortable. Strips down well for lightweight use too. It's surprising what will go if you think about it hard - and pack it in well. The Missus has been wearing her sac for a couple of hours nearly every day around the house, we couldn't find the rice this weekend, there was 4kgs in her bloody rucksac