Drawing design cues from our flagship triathlon shoe, the GEL-NOOSA TRI™ 15 GS (Grade School) style channels the same energetic color blocking, along with a technical design.​ Featuring a mesh upper, this shoe's vibrant colorway is combined with a series of bold “NOOSA” graphics.​ Injected with improved comfort in the midsole, thanks to the injection E.V.A midsole and increased flexibility in the forefoot, this shoe also incorporates a toe stitched rubber outsole compound for improved durability.​