TWIST Freezer Pack Pouches, 81 total. ① Combines the reassurance and affordability of baby bottles with the convenience of breast milk storage bags. From pumping to feeding, all in one. No transfer needed, prevents bacterial contamination. ② Twist Pouches are compatible with all major breast pump brands (with adapter. Sold separately). ③ Secure string-tied cap prevents leaks. ④ Easy-to-label, clear surface. Bags are sterilized. ⑤ Pouches and caps can be reused after use, reducing the amount of washing up.