They are airtight, and they can go in the fridge and freezer. No microwave use. I put one in the pocket in back of my car seat so when I travel with my dog I have a water bowl. They fold down to about 1" tall.
Collapse-it Silicone Food Storage Containers - BPA Free Airtight Silicone Lids, 4 Piece Set of 6-Cup & 4-Cup Collapsible Lunch Box Containers - Oven, Microwave, Freezer Safe with Bonus eBook: Home
TUPPERWARE Flat Out 3 Cup 700 ML Collapsible Bowl #5452 With Seal Lime Green
TUPPERWARE Flat Out 3 Cup 700 ML Collapsible Bowl 5452 With Seal Lime Green
New Tupperware Round Flat Out Container - Purple. 3 Cup Capacity. Virtually Liquid and Airtight Seal.
Tupperware Flat-Out Bowl w/ Seal Round Collapsible Container 3 Cups Purple ❤️
Tupperware Brand Ultimate Mixing Bowls - Includes 3 Bowls with Lids and Splash Guard to Prep, Mix, Whisk, Knead, Marinate, Wash, Strain, Carry & Store - Dishwasher Safe & BPA Free
Tupperware FlatOut Flexible Storage Container 4 Cup Capacity Mulberry Purple: Home & Kitchen
Progressive International CB-20 Storage Bowls with Lids, Set of 3, teal, green and red : Home & Kitchen
TUPPERWARE Flat Out 3 Cup 700 ML Collapsible Bowl 5452 With Seal Lime Green
Vintage Tupperware Flat Out Collapsible Bowl, Lid 5452A, Lime Green, 3 Cup, 700 Ml Lunchbox, Camp, Space Saver, Dorm, Apartment Kitchen - Israel