Never used. Clean and from a smoke and pet free home. bkr is better. - A thoughtful accumulation of details that together feel like luxury - Silicone is protective, soft and grippy - Never looks scratched or dented and sets down silently - Never imparts weird, metallic taste or last-drink’s flavor - 100% dishwasher safe (caps only on the top rack) - Glass is the cleanest, greenest material - Non-toxic, no leaching (BPA-free, phthalate-free) - Doesn’t tip over easily - Small mouth for easy, no spill sipping - Leak-proof ergonomic cap - TSA-friendly (take it through security empty) - Forever reusable and 100% recyclable