This is a blue gasket set for a 580ml lock-top, one-push direct stainless steel bottle. I purchased it about 4 years ago and have kept it in a kitchen drawer since then. The paper inside is dirty, but the gaskets are clean. Thank you. - Model: Gasket set for lock-top, one-push direct stainless steel bottle - Size: For 580ml - Color: Blue Includes drinking spout gasket and lid gasket. Made by Skater Co., Ltd. Thank you for looking.