Work Boots

Steel-toed for extra protection.
Overview
Work Boots are a footwear item in Stardew Valley. They can be found in Fishing Treasure Chests after reaching Fishing level 2. They may also appear as the floor 10 chest reward in The Mines if remixed mine rewards are enabled in the Advanced Options menu when starting a new game.
They are also available for purchase from the Adventurer’s Guild after reaching floor 10 in The Mines. Like other footwear, Work Boots are equipped for their defensive and other stat bonuses, making them an early source of protection for players who explore mines or spend time fishing for treasure chests.
Official description
Steel-toed for extra protection.