Certified Safe For Overnight Sleep (yes really!) The Sleep Tight Baby Bed is what parents have been waiting up for! Purflo have used 20 years of experience in breathable technology to create a total game changer - the very first baby bed of its kind to be certified as safe for independent, overnight sleep thanks to its fully breathable mesh base and sides which allow air to safely circulate, so baby can breathe easily and stay at a safe temperature all night.