SuiLong 30cm Gel Memory Foam Hybrid Mattress | 7- Zone Individually Wrapped SpringEgg Shape Massage Foam: The egg crate shape is known for its massaging feel and the significant improvements to blood flow. Egg shape massage foam toppers provide good weight distribution. The peaks and dips present within the egg crate shape help reduce pressure on shoulders and hips, making them an excellent, supportive solution for side sleepers. they allow air to flow under the patient, which is important for preventing bed sores and fevers.