When we think about ice and snow, everything is all beautiful and sparkling and white, but when I was a kid my aunt moved to Cleveland, Ohio, and she was shocked by the way that the snow JUST STAYED THERE. It would start falling in October or November, and just hang around for months on end, getting progressively more black and brown and muddy and grimy, choking the grates and puddling up in slush ponds that would back up the sewers. Somebody's gotta go clean that stuff up, you know. If that's you, you might want to be wearing one of these.
Armor (light), uncommon (requires attunement)
This supple leather outfit has an array of complex straps, along with a masked hood and boots that seal onto the garment, making the whole of the suit waterproof. If the straps are arranged for maximum protection as a full-round action, the sewer suit functions as +1 leather armor, but it also can be worn more loosely as a simple garment by those not wishing to wear armor. The masked hood of the sewer suit filters out the filth of the sewers and similar environments, granting the wearer advantage on saves against disease. The wearer can hold their breath for up to 10 minutes and gains advantage on saving throws against inhaled poisons and resistance to poison damage from inhaled poisons, poison gas, and damage dealt by fungus hazards like green slime.
The slick leathers of the sewer suit are a great boon in moving through tight spaces, as the wearer ignores the effects of difficult terrain when moving through tight passageways, bogs, and aquatic terrain, and gains a +2 bonus on Strength (Athletics) checks made to climb or swim in sewers and similar wet subterranean environments (GM’s discretion). The wearer does not have disadvantage when making melee attacks underwater.