Photo 1 of 4pcs Bite Valve for Zak Designs Kelso, Silicone Replacement Bite Valve Compatible with Zak Designs Kelso 15 Oz/16oz Reusable Cup Lid Replacement Straws Accessory (Yellow)

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Photo 1 of 4pcs Bite Valve for Zak Designs Kelso, Silicone Replacement Bite Valve Compatible with Zak Designs Kelso 15 Oz/16oz Reusable Cup Lid Replacement Straws Accessory (Yellow)Photo 2 of 4pcs Bite Valve for Zak Designs Kelso, Silicone Replacement Bite Valve Compatible with Zak Designs Kelso 15 Oz/16oz Reusable Cup Lid Replacement Straws Accessory (Yellow)