Fit & Fresh Lunch on the Go and Kids' 1 Cup Replacement Ice - Rectangle Version (2 Pack) MATERIALS YOU CAN TRUST: Set of 2 reusable non-toxic, BPA-free ice packs FITS IN OTHER FIT & FRESH CONTAINERS: Fits inside the lids of Fit & Fresh rectangle 2 cup containers CONVENIENT: Slim size fits inside container lids or within insulated lunch bag DIMENSIONS: Each ice pack measures 4.75 x 3 x 0.5.