single bed mattress sale in trichy growell beds and furnitures trichy A pocketed spring king-size mattress typically refers to a mattress that utilizes pocketed coil springs as its primary support system and is designed to fit a king-size bed frame. Pocketed coil springs, also known as pocket springs or encased coils, are individual springs wrapped in fabric pockets. Each spring operates independently, providing targeted support to different areas of the body. This design helps reduce motion transfer, meaning you're less likely to feel your partner's movements during the night