Check the listing for details. Memory Foam Earbud Replacement Tips for Bose QUIETCOMFORT 20. Color: Black, Condition: New. Listed at 11.10 USD. Memory Foam Earbud Replacement Tips for Bose QUIETCOMFORT 20 Our memory foam tips are made of ultra-soft breathable memory foam that provides all-day comfort with no in-ear fatigue or irritation. They are washable & waterproof. You will receive 2 pair of each size of Memory Foam earbud replacement tips 2 - pair small / 2 - pair medium 2 - pair largeCOLOR: BLACK Sizing instructions: Earbud tip sizing is actually very simple; you have two things to look at. 1. The size of your speaker stem (we refer to the part of your earbud our tips fit on as a speaker stem).2. Then second, the hole size of our tips. Our memory foam type tips will fit all earbud types with a speaker stem diameter from a 5 mm to a 6.5 mm in diameter. ABOUT US: We are an earbud replacement Store; our primary product is earbud replacement tips. SHIPPING & HANDLING: We ship all our orders the same day or within 24 hrs. of receipt of order.DOMESTIC SHIPPING IS FREE / INTERNATIONAL IS BY LOCATION. REFUNDS & RETURNS: We offer a 30 day " RETURN POLICY ", no questions asked, we supply the return label and refund your money 100%. CUSTOMER SATISFACTION: Customer satisfaction is very important to us, if you are not totally satisfied with your purchase, we will make it right, GUARANTEED. Our tips are generic non branded tips, we do not support or have any affiliation, association or partnership with the brands listed. They are compatible replacement parts.