plastic free reusable silicone bag that folds into a bowl (large)
1.5L 100% platinum silicone bag with hard anodized clamp that won't let you down. Great for freezing liquids, awesome for fridge storage. Take the clamp off and it's an amazing microwave steamer. Open and fold it over to make a big bowl, great for camping and packed microwavable yummies.
The plastic free reusable silicone bag that folds into a bowl (large) is the yin, to your yang. You've found what you're looking for.