These super smooth, opaque support tights are made with a brand new yarn technology called FIR (far infrared ray). The thermal energy emitted by the wearer is reflected back to the skin tissue, by a mineral additive in the yarn, allowing invigoration of blood circulation on the skins surface. Red Wellness do not heat up and do not act like thermal underwear, their purpose is to improve blood circulation in the legs, by the graduated compression, and to improve blood circulation on the skin surface, smoothing the touch of your skin and helping to reduce the appearance of cellulite. Unlike the micromassage and silver wave, these do not leave wave-like furrows on the skin, but instead, leave a smooth looking and smooth feeling, energetic pair of legs. Repeated washing does not alter the effectiveness of the FIR technology, nor does it diminish the elastocompression. Lab tests have confirmed the emissivity of infrared rays. The XL and XXL sizes feature an extra panel in the back to allow for more room, more stretch and better fit. XXL Size is priced at & 163;39.50, this will display automatically in your shopping basket. Lightweight Graduated Compression 12-15 mmHg Opaque FIR Anti-Cellulite Technology Sanitised Anti-Microbial Treatment 78% Polyamide/20% Elastane/2% Cotton