Check out this custom Harley-Davidson styled custom cup!  It can be customized for Fathers Day with Dad, Daddy, Papa, Granddaddy, or a name!  You pick what it says!
 
Built of premium 304 food-grade stainless steel inside and outside to be tough enough to resist dents and rust
Having excellent double-wall vacuum insulation that helps keep cold drinks frosty cool or hot drinks toasty warm from the first sip to the very last drop
Featuring a slim body and straight wall, which make it fit comfortably into hands of all shapes and sizes, and also perfectly fit in virtually any cup holder