Here's a great alternative to the Stand and Zip (hot link to BPL store item) OP Sak by Watchful Eye Designs. It's not odor proof though.
It's the Trader Joe's Jumbo Raisen Medley. After using the raisens, the bag is a freebie meal bag. Measures: 8"WIDE x 6.75"TALL with a 3.25" wide gusset on the bottom. WEIGHS: 10g or 0.35oz
Gusseted, zip-lock top seal, more durable than OP Saks IME. I really like this bag, the material is more rigid and tougher than the OP saks and it handles boiling water no problem. The seal on the zip is nice and tight too.