Memory Foam Lumbar Support Pillows
Lumbar support pillows featuring a memory foam filling are becoming increasingly popular with those people looking to relieve or prevent lower back problems. Memory foam, originally developed by NASA in the 1970′s as part of its space program, molds itself to the shape of your back.
It gives good support, especially if it’s layered over a firmer material, and most importantly provides even pressure distribution. The material becomes more flexible as it absorbs body warmth and returns to its normal shape once you get up. They are also recommended by many people who suffer from neck or upper back problems.
Memory foam is composed of cells which compress when pressure is applied to them, and spread this pressure to neighbouring cells. This is different to the way normal foam works, in that traditional foams try to spring back immediately to their original shape. Memory materials are also sensitive to heat. At cold temperatures they are firmer, but become more elastic, and therefore softer, when heated. This helps them to mold to your body’s contours.
Not all memory foam pillows are created equal, and it pays to buy a good quality one. Cheaper versions tend not to function particularly well and the material may break down after a fairly short period of time. Highly recommended is the HoMedics Ortho Therapy Lumbar Cushion