Features . Birthday Theme Flask with Happy Birthday Laser Engraved. Flask Body Made of 18/8 Grade Premium Quality Stainless Steel. Captive Top Helps You Never Loose Cap. Ideal For Gift Giving. Quality - High Quality. Diamensions - 5 Height x 3.7 Width x 0.90 Thickness in.. Flask Capacity - 8 oz.. Item Weight - 5 oz.