Consumers should immediately stop using the mattress if it creates a gap of more than 3 cm between the mattress and the crib side rails. Consumers should measure and ensure the gap between any side of the crib and the mattress is no greater than 3 cm (1 3/16 in) when the mattress is pushed into one of the corners of the crib. Consumers may contact Simmons Kids to receive a free replacement mattress. For additional information, consumers may contact Simmons Kids at (800) 810-8611 between 8:30 a.m. and 5 p.m. ET, Monday through Thursday, and between 8:30 a.m. and 2:30 p.m. ET, on Friday or visit the firm's Web site at www.simmonskids.com or Voluntary Recall Notification . Consumers may also e-mail the firm's Customer Assistance department: simmonskidsrecall@simmons.com . Date modified: 2008-06-01