Tailor-made for Hydroflask: Precision-engineered to fit every curve for Hydro Flask 16–40 oz bottles, lids, and straws—cleaning more thoroughly than generic brushes that miss tight spots. Telescopic bottle scrubber bursh: 16" handle extends & locks, letting you reach the deepest 40 oz growler tumbler without hand fatigue; soft yet tough bristles strip away stubborn protein-shake residue without scratching the powder-coat finish. Wide-mouth & straw wizardry brush: Wide-mouth straw lid brush sweeps the entire sip-ring in one twist, while the ultra-thin straw pipe brush cleaner flexes through flip, straw, and chug lids—flushing out stains-causing gunk other kits leave behind. 3-in-1 detail tool: Angled tip scrubs for Hydro Flask's threaded neck, mini bristles clean silicone gaskets, and loop pick lifts hidden grime under lid tabs—keeping every sip tasting fresh, not funky. Universal tumbler compatibility: Same perfect fit for Owala/Stanley/Yeti/Simple Modern/Cirkul/HydroJug/BrüMate/Mira/Takeya/CamelBak/Nalgene/S'well/Meoky/Zibtes and more—one water bottle cleaning kit cleans the whole cupboard.Palksky water bottle cleaning kit with flexible bristles and adjustable angles that adapt to curved surfaces, wide mouths, and tall designs—perfect for stainless steel, glass, plastic, or silicone(materials) water cups.