Set of 5 Cadence Flex Capsules with 1 Flex Extender. Dark Slate Grey 4 Medium (1.32 oz capacity) 1 Small (0.56 oz capacity) 1 Extender (adds 1.43 oz capacity) Interchangeable Tile Labels Included: - Cleanser - Moisturizer - Shampoo - Conditioner - Sun logo The Flex Medium (retail $24) is 100% leakproof, magnetic, and modular. It’s great for cleansers, face masks, and supplements. The Flex Small (retail $15) is 100% leakproof and magnetic. Its low profile design is great for products like eye cream, balm, and medications. The Flex Extender (Retail $14) The Flex Extender instantly adds 1.43 oz to any Flex Capsule so you are prepared for any length trip. Simply add to transform your Flex Medium into a Flex Large. When you’re reaching the last bits of your product, unscrew the Extender for easy access to every last drop. The Capsules are magnetic and come with magnetic labels (we call them ‘Tiles’). These Tiles are not interchangeable with The Original Capsules, but are interchangeable between The Flex Small, Flex Medium, and Flex Large Capsules. The Capsules are leakproof, TSA-compliant, BPA and PFA-free. All Cadence Capsules are free from PFAs, BPAs, are non-leaching, UV-protective, and can be filled with any product – even your oils. Many silicone or other traditional travel-sized bottles are porous and can absorb your oils and serums into the material of the bottle, which we made sure was a non-starter here.