Full Product Info Ideal for when you want to go out for a fast and fun run, the Nike Free RN 5.0 Women's Running Shoes offer a natural, close the ground running feel. The stretch bootie construction of the upper is low on distractions with the heel counter removed for full freedom of movement. This freedom extends throughout the midsole and outsole which both feature hot-knife cut flex grooves for a highly flexible and natural running feel. The foot is kept close to the ground with the single layer sockliner and low foam density offering cushioning without getting in the way of that natural feeling running high. Stretch upper fits the foot like a second skin Asymmetrical lacing system is placed on the side to reduce pressure on the instep Removal of the heel counter allows full freedom of movement Single-layer sockliner keeps the foot close to the ground Double hot-knife cuts on the outsole and and top of the midsole flex for flexibility every step Rubber pods on forefoot and heel enhance traction Features Designed for a close to the ground, natural feeling run Stretch bootie construction with asymmetrical lacing offers a snug fit that doesn't put pressure on Double hot-knife cuts on the outsole and top of midsole offer optimal flexibility Show Size Guide Hide Size Guide .view{margin:auto;width:auto}.size-chart{border:0}.size-chart-wrapper{position:relative;overflow:auto;white-space:nowrap}.sticky-col{position:sticky;position:-webkit-sticky;background-color:#fff}.first-col{width:100px;min-width:100px;max-width:100px;left:0}.second-col{width:150px;min-width:150px;max-width:150px;left:100px}@media (max-width:767px){#sizechart-reb .table td,#sizechart-reb table td{display:table-cell;width:inherit}#sizechart-reb .table thead,#sizechart-reb table thead{display:table-header-group}} Nike Size Guide Shoe Sizes Shoe sizes on product details pages are in US shoe size. Your foot length (in cm) will be different than the CM size on your shoe box. CM size refers to a sizing system, like US, UK, EUR, and should not be confused with the length of the foot UNISEX SHOE SIZES US MEN 1 1.5 2 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 US WOMEN 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 UK 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 EU 32.5 33 33.5 34 35 35.5 36 36.5 37.5 38 38.5 39 40 40.5 41 42 42.5 43 44 44.5 45 45.5 46 47 47.5 48 48.5 49 49.5 50 50.5 CM 20 20.5 21 21.5 22 22.5 23 23.5 23.5 24 24 24.5 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 30.5 31 31.5 32 32.5 33 33.5 34 MEN'S SHOE SIZES US 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 15 16 17 18 UK 5.5 6 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 14 15 16 17 EU 38.5 39 40 40.5 41 42 42.5 43 44 44.5 45 45.5 46 47 47.5 48 48.5 49.5 50.5 51.5 52.5 FOOT CM 23.7 24.1 24.5 25 25.4 25.8 26.2 26.7 27.1 27.5 27.9 28.3 28.8 29.2 29.6 30 30.5 31.3 32.2 33 33.9 WOMEN'S SHOE SIZES US 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 UK 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 EU 35.5 36 36.5 37.5 38 38.5 39 40 40.5 41 42 42.5 43 44 44.5 FOOT CM 22 22.4 22.9 23.3 23.7 24.1 24.5 25 25.4 25.8 26.2 26.7 27.1 27.5 27.9 CHILDREN'S SHOE SIZES US 0C 1C 1.5C 2C 2.5C 3C 3.5C 4C 4.5C 5C 5.5C 6C 6.5C 7C 7.5C 8C 8.5C 9C 9.5C 10C 10.5C 11C 11.5C 12C 12.5C 13C 13.5C UK 0 0.5 1 1.5 2 2.5 3 3.5C 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 EU 15 16 16.5 17 18 18.5 19 19.5 20 21 21.5 22 22.5 23.5 24 24 25.5 26 26.5 27 27.5 28 28.5 29.5 30 31 31.5 CM 6 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 13.5 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 FOOT CM 8.3 9.1 9.5 10 10.4 10.8 11.2 11.6 12 12.5 13 13.3 13.8 14.2 14.6 14.6 15.5 15.9 16.3 16.7 17.2 17.6 18 18.4 18.8 19.3 19.7 YOUTHS SHOE SIZES US YOUTH 1Y 1.5Y 2Y 2.5Y 3Y 3.5Y 4Y 4.5Y 5Y 5.5Y 6Y 6.5Y 7Y US M / W W5.5 W6 W6.5 W7 M6 / W7.5 M6.5 / W8 M7 / W8.5 EU YOUTH 32 33 33.5 34 35 35.5 36 36.5 37.5 38 38.5 39 40 EU M / W W36 W36.5 W37.5 W38 M38.5 / W38.5 M39 / W39 M40 / W40 UK YOUTH 13.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6 UK M / W W3 W3.5 W4 W4.5 M5.5 / W5 M6 / W5.5 M6 / W6 FOOT (CM) 20.1 20.4 20.8 21.2 21.6 21.9 22.3 22.7 23.1 23.4 23.8 24.2 24.6 Features Designed for a close to the ground, natural feeling run Stretch bootie construction with asymmetrical lacing offers a snug fit that doesn't put pressure on Double hot-knife cuts on the outsole and top of midsole offer optimal flexibility