Kiprun and Smoon’s new Run 900 shorts blend lightweight race-ready design with built-in period protection, letting runners train and compete comfortably with a three-layer absorbent brief that helps prevent leaks for up to 12 hours.
Kiprun, the running brand owned by Decathlon, has introduced a new pair of running shorts designed specifically for women who train and race during their menstrual cycle.
The product was developed in collaboration with French menstrual technology company Smoon and features a built-in absorbent brief.
The shorts, called Run 900, combine standard running apparel with integrated period protection. Instead of wearing separate products, runners can use the shorts as a single piece of gear during training or competition.
Inside the shorts is a three-layer brief designed to absorb menstrual flow and prevent leaks.
The top layer pulls moisture away from the skin to keep it dry. The middle layer absorbs liquid, with a capacity equivalent to about two tampons. A waterproof outer layer helps prevent leaks and control odor.
According to the companies, the protection can last up to 12 hours.
The outer fabric is based on Kiprun’s existing Run 900 Light running shorts.
The garment weighs about 111 grams in a medium size and includes practical features such as a zippered pocket on the back, a small internal key pocket, and seams designed to reduce chafing during long runs. The materials used are OEKO-TEX certified and tested for skin safety.
The collaboration between Decathlon and Smoon took five years to develop. Smoon has previously produced menstrual swimwear and other products designed for active use.
The Run 900 shorts are priced at €49.99 and are expected to be used for both training and race day.
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