Embodying translucent hues in the purest form, the Stone Collection emulates the most coveted semi-precious gems. Featured in a durable stone-like texture for added grip, the muted color palette simulates the raw delicacy of the minerals. S'well bottles feature triple-layered, vacuum-insulated construction, designed to keep beverages cold for up to 24 hours or hot for up to 12. 9oz are perfect for on-the-go and fit snugly inside hand-bags and lunch-bags. BPA Free and reusable. Hand-wash only.