To use these Castelli bib shorts, simply put them on like regular cycling shorts. The bib straps go over your shoulders to keep the shorts in place. For racing, they'll give you a great fit and the performance you need. When riding for fun, you'll enjoy the comfort they offer. As for care, it's best to wash them in cold water with a mild detergent. Avoid using fabric softeners as they can damage the fabric's performance. After washing, let them air dry. Don't put them in the dryer as high heat can shrink or damage the materials. Check the shorts regularly for any signs of wear and tear, especially the leg grippers and the seat pad.