Features * For collection, storage and freezing of breastmilk * Compatible with all Medela breastpumps for pumping directly into the bag * Exclusive self-stick strap attaches directly to breastshield for fast & easy setup * Leak-proof, easy-to-close zipper top * Special plastic retains breastmilk’s beneficial properties * Double-walled for long and safe breastmilk storage * Pre-Sterilized & disposable 20 Bags Per Pack Availability: Usually ships the next business day. 87034Retail Price: $18.99Sale Price: FREE SHIPPING ON EVERY ORDER! Click to see our FREE SHIPPING & COUPON details! We are a member of the Better Business Bureau.