The ezWalker,™ Worker designed for men or women, is ultra thin, 3/4 length and will fit in all work shoes with ease. The ezWalker™ Worker is recommended for people who have heavy physical labor jobs and/or anyone that averages over 250 lbs. It is designed with a stronger material on a wider base for more comfort and durability. Your ezWalker™ Worker can be placed under the existing removable insole of the shoes for a support base unlike any other custom orthotic on the web. If the existing insole is not removable, simply place your ezWalker™ directly in the shoe adding custom support and comfort in an instant. It is important to understand the fundamentals of proper shoe fitting to make your ezWalker™ feel great. Have your fit checked regularly and understand the size on the measuring device is only a reference. Mass manufactured shoes are NOT all created equal. Refer to the Shoe Fitting Reference Guide for proper guidelines on how to best fit your shoes. Remember: "When your feet feel good you feel good."