2024.09.13
Thicker Sole, Enhanced Cushioning & Responsiveness! How Has ASICS "MAGIC SPEED 4" Evolved?
ASICS has introduced "MAGIC SPEED," which carries over the functionality and design of the "METASPEED" series while appearing as a more accessible thick-soled carbon shoe for a wider range of runners. It enjoys great popularity among those trying carbon-plated shoes for the first time and runners aiming to set personal bests in races.
The latest release in the series, "MAGIC SPEED4," features a thicker sole than its predecessor, enhancing cushioning. Additionally, it is equipped with lightweight, high-rebound material, FF TURBO in the forefoot area. This evolution is aimed at maximizing the responsiveness during push-off. Just what kind of shoe has it transformed into?
Heel Thickness at 43.5mm—A Dramatic Improvement in Cushioning
"MAGIC SPEED is targeted primarily at runners using carbon-plated shoes for the first time and those looking to achieve personal records in races. For this level of runner, they may be running a full marathon for 3 or 4 hours continuously."In this update, we aimed to enhance comfort and ensure the shoe supports runners effectively through to the end of their race," says Atsushi Kaneda from ASICS Japan's product department.
One major update is the increased sole volume. The previous model had a stack height with a 36mm heel and 29mm forefoot, with a drop of 7mm, while this version features a 43.5mm heel, a 35.5mm forefoot, and an 8mm drop.
One major update is the increased sole volume. The previous model had a stack height with a 36mm heel and 29mm forefoot, with a drop of 7mm, while this version features a 43.5mm heel, a 35.5mm forefoot, and an 8mm drop.
Although the World Athletics regulations limit the sole thickness to 40mm or less for shoes worn by athletes, the "MAGIC SPEED 4" exceeds this thickness. This indicates that the design is not aimed at competitive athletes but is focused on providing maximum comfort for recreational runners up to the finish line.
Improved Responsiveness Allows for Smoother Transition of Center of Gravity
Both the top (upper side of the plate) and bottom (lower side of the plate) of the midsole utilize FF BLAST PLUS. This aspect remains unchanged from the previous model, however, this version incorporates lightweight, highly responsive FF TURBO beneath the forefoot plate."Recent trends show that runners worldwide are demanding higher cushioning in their shoes; therefore, we have increased the thickness of the midsole to provide an enhanced sense of comfort. Additionally, by integrating responsive materials under the forefoot plate, we believe runners will experience an even greater sensation of propulsion forward compared to the last model."
The carbon plate serves to provide substantial energy return by compressing the foam material across its surface while also contributing to stability.
In recent years, foam materials used in midsoles have dramatically evolved to become lighter and softer. While including extensive volumes of this softer material can enhance cushioning and responsiveness, it can also compromise stability. By adding a plate that possesses rigidity and resists twisting, stability is preserved.
That carbon plate, while maintaining the same inclination and hardness as the previous model, now features a split structure at the heel, allowing for a moderate flex of the plate during landing, effectively cushioning the impact.
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