Delfin Spa"s best selling shorts are designed to fit a woman"s body and to aid in weight loss and cellulite reduction. Bio Ceramic material in these shorts both generates Far Infrared Rays (FIR) and reflects your body"s own FAR infrared rays. "FAR" relates to the size of the wavelength and Infrared is the part of the light spectrum that generates heat. The primary benefit of these rays is to help to break down cellulite cells, improve circulation and revitalize tissue. Increased heat and molecular stimulation enhances the effectiveness of exercise, increases blood flow, and accelerates metabolism to burn more calories. Bio Ceramic shorts also improve the effectiveness of anti-cellulite cream by assisting its penetration deep into the skin and cellulite. Bio Ceramic shorts feature 1.5mm neoprene with soft nylon/lycra lining and soft elastic waistband. The shorts are contoured to fit snuggly and contain an anti-microbial additive to reduce bacteria build-up. Since these shorts fit close to the body, they can also be worn for everyday use to help contour your body while helping cellulite reduction. Use the shorts as part of your daily exercise routine and great for post-pregnancy as well. FREQUENTLY ASKED QUESTIONS: 1) What"s up with the funny smell? You may notice a slight rubbery odor when you first open your product package. This is common and expected from the neoprene. We air the material prior to sewing; however, the smell can build up a bit once the package is sealed. Any odor will quickly dissipate with use and from its initial washing. 2) Should I wear anything underneath the shorts? Yes. Wearing underwear beneath the shorts will not negatively impact the shorts" performance and is advised for proper hygiene and health. 3) How do I care for the shorts? Hand wash in cool to warm water with mild detergent and line dried. Using a washing machine should not be the standard practice (once in a while is OK) and never machine dry.