Looking for bouncy comfort? Try Boltt Plus, a bonnell spring mattress with a lush Euro top finish for added plushness. Designed for incredible zonal support, it features our 3 Zone Copper Infused NRG Layer with smart grooves and Copper infusion to enable better air circulation. All this is enhanced by the Anti Stress Technology in the knitted fabric, designed to repel negative ions from your body, leaving you positively energised.