Collapse-it Food Storage & Cooking Container Lunch Box - Medium 4-Cup Bowl Perfect for meals on the go, these adaptable containers collapse to nearly half size when empty. Medium 4-Cup Bowl. Size: 6.5" Diameter. 3" Tall. Collapses down to 1.5". Collapses to LESS than half its size for EFFICIENT STACKABLE  STORAGE. High-quality durable silicone. Will vent for microwave or oven heating and is BPA free,FDA and LFGB approved, Lead free, Toxin free, Non-allergic.