Fit them into the slots of the big bowl either upside down or right side up

From the Manufacturer

Extra-large parent cup holder

no assembly

Always place your baby on their back for sleep

Britax One4Life ClickTight All-in-One Car Seat - Diamond Quilted Grey Sesame Street Fit them into the slotsEASILY CONVERTS: From a rear facing infant seat (5 50 lbs) to a forward facing 5 point harness seat (22 65 lbs) to a high back belt positioning booster seat (40 120 lbs) CLICKTIGHT(R) INSTALLATION: Unobstructed seat belt paths clear the way for confident installation, and the automatic tensioner takes care of the tightening PATENTED V SHAPED TETHER: The staged release stitches helps slow and reduce forward movement during a crash SAFECELLTM