12 oz (355ml) Klean Kanteen - For your child/toddler, the 12 oz size comes with the new "soft" silicone Sports Cap 3.0. It is "chirp-free", so no more funny noises or whistles. The Sports Cap 3.0 is leak resistant and includes a dust cover and attachment loop. The brushed stainless steel bottle is also available with a leak proof Loop Cap that also has an attachment loop. Stainless Steel bottles are dishwasher safe but to make the painted finish last, it is best to hand wash the painted bottles.