Sip, flip & go! Meet Halo, where style meets functionality. Say goodbye to messes with the spill-proof silicone straw and furniture-friendly Soft Sit base. Halo has an integrated carry handle that flips out from the lid, ensuring your refreshment is always within reach. Integrated carry handle that flips out from the lid. Spill-proof silicone straw. Keeps drinks cold for up to 32 hours. Fits your cupholder. Soft Sit™ Base. Dual-wall vacuum insulated & sweat-proof. 18/8 Food-Grade Stainless Steel & BPA free. Reduce Lifetime Guarantee. Measurements on the inside of a tumbler.