You can have Safety and Style with Doctor-approved, Pure Safety Vertical Crib Liners to ensure a better and more comfortable night's sleep. Our liners protect baby's head & body, keep limbs safely inside, and provide optimum air-flow. CSPIA Approved & Certified. Exempt from all crib bumper bans. Cited as safe choice for crib bedding in Journal of Pediatrics Dec. 2015 Issue.