humangear GoToob+ Bottles - Silicone Leak-Proof Travel Tubes for Toiletries, Camping & TSA Carry-On (3-Pack), Medium (2.5 fl oz; 74ml), Clear/Red/Orange

My friends and I use silicone 1.7 oz GooTube+ bottles. Have never leaked, easy to clean, easy to fill and nice to squirt syrup in my mouth while riding https://a.co/d/02dJSumd