OXO Good Grips Glass Bowls are made of oven-, freezer- and microwave-safe borosilicate. That means they can be heated from 32 F (0 C) to 450 F (232 C) without shattering. Generous rims allow for easy handling when mixing, pouring and cleaning, plus the glass won’t absorb odors or stains. Ready to wrap up? Our Bowls nest for simple storage. Each 4 Piece set contains 4 (four) 10 Ounce Glass Prep Bowls Borosilicate GlassOXO’s Glass Bowls can withstand a temperature change from 32 F (0 C) to 450 F (232 C) without shattering. They’re also stain and odor resistant. Above the CurveWide, curved rims provide easy handling while mixing, pouring and cleaning. Easy on the EyesOXO’s elegant design offers kitchen-to-table appeal. Versatile VesselsEach Bowl is oven, freezer and microwave safe. Space SaverWhen you’re finished, OXO Good Grips Glass Bowls nest for safe storage. Good TipKeep hot Bowls off cold or wet surfaces. We recommend placing hot items on a trivet, dry potholder or dishcloth until they've cooled down.