Made in UK: Designed and made in the UK. Medium firm: Provides a medium firm comfort level. Mattress: Get an essential 18cm three zone pocket sprung mattress. Design: A unique combination of next-generation adaptive foam, high density PU comfort foam layer and up to 1000 individually wrapped Active Spring pocket springs. 3D quilted cover: Enjoy sweat free sleep with the quilted polyblend knitted jacquard and sanitized cover allowing maximum airflow - proven to wick away moisture and dissipate body heat, resulting in a cooler sleep surface. Sizes: Single, Small Double, Double or King (plus EU single and EU double sizes - see full details below for measurements). Medium Firm Pocket Spring Mattress | Single | Living Social