Universal fit sponge brush designed for thorough, gentle cleaning of cups, bottles, flasks and a wide range of container shapes and sizes. Key benefits Universal compatibility: Designed to clean sports bottles, travel mugs, narrowneck flasks and everyday cups without struggling to reach odd shapes. Gentle on surfaces: Soft, nonabrasive sponge heads remove residue without scratching glassware, ceramics or coated interiors. Flexible handling: Detachable handle design adapts to different cleaning needs and storage situations, making it easy to shorten or extend reach as required. Deep cleaning reach: Extended handle option accesses the very bottom of tall or narrow containers for a complete clean. Reliable performance: Sponge head conforms to contours for efficient scrubbing while minimizing splashing and effort. Product attributes Function: Cleans interior surfaces of cups, bottles and flasks; ideal for removing beverage residue, detergent suds and trapped debris. Compatibility: Works well with a broad variety of container types and sizes including water bottles, insulated mugs, glassware and ceramic vessels. Material: Soft, nonabrasive sponge head with a sturdy detachable handle for controlled handling and extended reach. Size and use: Compact enough for small cups yet extendable to reach deep bottles and thermoses. Typical use scenarios Daily bottle cleaning: Remove residue from sports and reusable water bottles after workouts or long days out. Travel mug and flask maintenance: Reach the bottom of insulated travel mugs and flasks to keep beverage containers clean between uses. Glassware and vase care: Gently clean tall glassware, narrow decanters or decorative vases without scratching delicate surfaces. A practical, easy to use sponge brush that balances gentle care and effective cleaning for a wide range of household containers.