Plastic caps perfect for storing breast milk in the refrigerator. I don't remember using them after purchase, so they are in excellent condition. They have been sterilized, but please sterilize them by boiling before first use. - Brand: pigeon - Purpose: Breast milk storage cap - Color: Blue - Features: Designed for storing breast milk in the refrigerator - Function: Plastic, screw cap - Size: Standard size - Contents: Set of cap and inner packing ● Instant purchase OK ● Will be shipped via regular mail (定形外郵便) ● If you prefer Yu-Yu Mercari delivery (+400 yen), please let me know via the question function beforehand, and purchase after I reply ● No cancellations or returns due to buyer's circumstances