This mattress is from the contract range - this mattress is designed specifically for commercial business, exclusively for landlords, schools, halls of residences, students & universities which exceeds all required standards. The mattress is constructed with a Stamford stripe top panel with a 7.25” inch border (18cm approximately). The mattress has been designed with no spring and developed with high-density Reflex Foam which is made up of thousands of air bubbles that expand and contract when the sleeper lays on the mattress. This provides both body molding and bounce-back properties which offer the sleeper a firm yet hugely comfortable sleeping experience. The mattress depth is 7” inches approximately 18cm. The fabric has been designed with hypoallergenic and anti-dust mite fillings which keep the mattress odor-free for a cleaner healthier sleeping environment. We’ve also created this mattress with a dual side with our signature Stamford stripe fabric on both sides making it so you’re able to rotate or turn the mattress regularly in order to keep it in pristine condition. It is fully compliant with all UK & EU legislation and regulations including fire tests & regulations Source 5 fire retardant. With our in-house technology, the mattress will be vacuum-packed, rolled, and boxed, we recommend leaving the mattress once it is out of its packaging for 24 to 48 hours to allow the mattress to expand to its original size.