An Onsen (温泉) is a Japanese hot spring and the bathing facilities and inns frequently situated around them. As a volcanically active country, Japan has thousands of onsens. Growing up we used to call them the naked baths :)
Bath Sheet: 40 x 70 inches (102 x 178 cm)
Bath Towel: 31 x 57 inches (79 x 145 cm)
Hand Towel: 14 x 33 inches (36 x 84 cm)
Face Towel: 14 x 14 inches (36 x 36 cm)
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