Waterproofness is an essential function required for workwear used even on rainy days. This time, we asked Kunihiko Hayashi, Manager of the 3rd Product Development Division of WORKMAN CO.,LTD., about the developmental insider story of the '
Waterproof Messenger Bag', which has been continuously ranked high in sales at Workman for many years. The interview was conducted by Koji Yamada, a Workman official ambassador, who has released a number of jointly developed products.