NUK® 0+M Slow Flow Orthodontic Silicone Nipples. Brand trusted by moms for over 25 years in North America. 2 wide-neck silicone nipples. Reduces colic. BPA free. NUK® Air System™. Simulates and supports breastfeeding. Vented nipple - reduces colic. Orthodontic nipple promotes healthy teeth formation. Fits all NUK® wide neck bottles. Try NUK® pacifiers with orthodontic nipples. Nuk is a registered trademark of MAPA GmbH, Zeven, Germany. 2010. All rights reserved.