Hey there! Using these 'Powerful Sumi - e' products is a breeze. You can wear the T - shirts, tank tops, and hoodies just like your regular clothes. They're great for daily wear, going out with friends, or even a casual day at work. The tote bags are perfect for carrying your essentials around town. Hang the posters on your wall to add a unique touch to your room, and use the home decor items to spruce up your living space. When it comes to maintenance, for the clothing items, follow the washing instructions on the label. Usually, it's best to wash them in cold water and tumble dry on low. For the tote bags, a gentle wipe with a damp cloth should do the trick. And for the posters and home decor, just dust them regularly to keep them looking great. Just remember, avoid using harsh chemicals on any of these products to keep their quality intact.