Maximum Support, 40-50 mmHg is the highest compression level available in ready-to-wear formats and is reserved for severe venous insufficiency, severe lymphedema, and complex post-surgical cases. This level requires a physician prescription and precise measurement. Garments at this level are typically mediven plus or circaid inelastic systems. If you've been prescribed 40-50 mmHg compression, our team can help you confirm the right product and fit.