Don't take the helm without a generous supply of water, especially in the tropics! You'll get dehydrated faster than you might expect. These robust tumblers are made with stainless steel and come with a straw to make drinking easy. 
.: Materials: stainless steel bottle, black plastic screw-on cap 
.: One size: 32oz (0.95l)
.: Double insulation construction
.: Inner plastic straw included
.: NB! Hand wash only