On LightSpray Cloudmonster 3 Hyper Seamless Super Trainer

A shoe made like no other. The On LightSpray Cloudmonster 3 Hyper uses On's LightSpray process: a robotic arm sprays roughly 1.5 km of continuous filament straight onto the sole, forming the entire upper in one piece in about three minutes.

Why it is different

Where a typical upper uses 20 to 30 separate pieces, this one uses none. There is no cutting, stitching, overlays, plastic heel counter, tongue or laces. The finished upper weighs around 33 g, and On states the process creates 75% fewer carbon emissions than its other racing uppers. Underneath sits the Cloudmonster 3 Hyper platform for long runs and tempo days.

• Seamless, laceless LightSpray upper of approx. 33 g
• Dual-density supercritical Helion HF: soft on top, firmer below
• No plate, with generous rubber coverage
• 6 mm drop (45 / 39 mm, On stated)
• Approx. 205 g (US M8.5)

Fit & sizing

Very tall, very soft and very light, with a wrap unlike any laced shoe. The second shoe ever built with LightSpray. Flurry Verdite or Black Apollo. Free tracked shipping.

Most performance running shoes are built on a single unisex last: the shoe is identical, only the size label changes. A US women's 8.5 is a US men's 7.

Use the unit switch above to move between US men's, US women's, EU and UK, or open the size guide for the full conversion chart.

Between two sizes? Email us before you order and we will help you choose. Size exchanges are accepted within 30 days of delivery.

Free shipping on every order, with no minimum. Orders are delivered in 4 to 12 business days, preparation and transit included, and tracking is emailed as soon as your parcel is dispatched.

Business days only: weekends and public holidays are not counted. Orders placed after the daily cut-off, at the weekend or on a public holiday are processed on the next business day, and periods of high demand can add extra time. Full terms: Shipping Policy.

Not the right fit? Unworn shoes in their original box can be returned within 30 days of delivery for a refund or a size exchange. Return shipping is paid by the customer unless the item is damaged, defective or incorrect.

If an item arrives damaged, defective or different from what you ordered, contact us promptly after delivery and we will put it right. Full terms: Return & Refund Policy.

Brand new and unworn, shipped in its original box. Every pair is inspected individually before it is packed: we check that it matches the description and photos on this page, that it ships in new condition, and that it is packed securely.

Questions before you order? Our team replies Monday to Friday at contact@runningshoeshouse.com.