After completing a career mode job or two in Powerwash Simulator, you should have a few hundred bucks and be able to use the in-game store. You can access the shop at any time by entering the menu and selecting the shopping cart icon in the top right corner. Choose the clothing category and shop for new gloves starting at $50 and going up from there. After purchasing the gloves, make sure you are in a level and not the main menu.
When you’re in a level, bring up your gear menu (using the Select button on Xbox) and go to Clothing at the top of the menu tab. From the clothing menu, select the Gloves category and select your new gloves to equip. Once selected, the new gloves will be attached to your character, which you can see in-game in first-person view when holding the pressure washer. The same menu can also be used to change your outfit once you’ve bought a new outfit.