Closeable Press-In Lid slides shut to tame splashes and trap temps, then slides open wide enough for easy drinking and reusable straws Soft Touch Exterior is easy and comfy to hold TempShield double-wall vacuum insulation protects temperature for hours Made with 18/8 pro-grade stainless steel to ensure pure taste and no flavor transfer BPA-Free & Toxin-Free. Free from toxins, free from worry