The 1955 Levi's® 501 jeans have a quintessential '50s shape: with more anti-fit in the seat area and a slightly fuller leg shape, they have a boxier silhouette.
They are the first 501 jeans to bear a Two Horse leather-like label . The familiar Levi's® big 'E' red tab, zinc button fly and copper rivets remain standard issue. This style is unwashed, raw blue denim.
oki-ni recommends you do not use soaps & detergents when you wash your jeans but you won't damage then by doing so. The true denim-connoisseurs way to care for your jeans is to wear them for 4-6 months without washing to allow the caste/colour (patina) to develop. After this, wash in warm water as infrequently as hygienically possible.