【Hybrid Queen Mattress】 Slumber Castle queen size mattress (80" x 60" x 12").featuring individual pocket springs combined with luxury slow spring back foam. Ergonomic designed to relieve pressure -feet. legs. hips. waist.shoulders. neck.and head-for a cosy dream 【Breathable & Skin-Friendly】The 12-inch Queen mattress is CertiPUR-US certified and Oeko-Tex Standard 100 certified. ensuring that its materials are safe and non-toxic. Medium Firm Feel and Ergonomic design ensuring sufficient support and pressure relief 【Medium Firm Feel Queen Mattress】With a medium-firm feel and an advanced pocket spring system. this 12 inch Queen mattress minimizes motion transfer and provides consistent support from every angle 【Motion Isolation & Edge Support】Individually Wrapped Coils with Motion Isolation. the Queen size mattresses effectively isolates motion. Enjoy a peaceful night's sleep with our hybrid mattress and you won't be disturbed by creaking or squeaking sounds 【Mattress in a box & Easy to set up】Perfect for all bed frames. Bed in a box for convenient transport. Upon receipt the Queen size mattress. Please allow 24-72 hours for your hybrid mattress to expand to the original size. then you can cosy into a dream -