Personalized Funny Mountain Biking Gravity Joke Newborn Layette. This cycling design for someone who enjoys mountain biking has bike and mountains silhouette and gravity joke. 100% combed ringspun cotton 5.8 ounce 1×1 baby rib sleeper. 3/8" flatlock binding at envelope neck and cuffs. Back sleeve flap to protect hands. Elastic opening at bottom. Infant: 0-3 Months