The lid of the shell has a circular cut-out to cue whether all pieces are in place and to let you know if you forgot a piece.
Electricity Free Cooling
A vacuum-insulated stainless steel shell + cooling puck that maximize cooling speed and duration (16+ hrs.).
A thermo-lid to monitor temperature. Simply double-tap or shake unit to reveal the temperature.
Light BPA-free inner bottle that holds 11 ounces of milk and is compatible with industry leading pumps.