Lifefactory glass sippy bottles feature a protective silicone sleeve for a non-slip grip and added durability. This set includes four 9oz bottles in vibrant purple, orange, and green shades, each equipped with a hard spout sippy cap. Crafted from high-quality thermal shock resistant borosilicate glass, these bottles offer a pure taste and are dishwasher safe for easy cleaning. The silicone sleeves include a decorative grape-like raised dot pattern and circular cutouts to monitor liquid levels. Perfect for toddlers transitioning from bottles to cups while maintaining a plastic-free drinking experience. Note that some caps show minor wear from use.