|Terrain:||Mud, Snow, Trail|
|Weight:||Men: 11.6oz | Women: 9.7oz|
|Heel to toe drop:||Men: 6mm | Women: 6mm|
|Fit:||Medium forefoot, Medium toe box, Wide heel|
|Arch type:||High arch|
|Use:||All-day wear | Jogging|
|Material:||Mesh upper, Rubber sole, Vibram sole|
|Features:||Sockless wear | Cushioned | Comfortable|
|Strike Pattern:||Midfoot strike|
|Distance:||Daily running | Long distance | Marathon|
|Heel height:||Men: 30mm | Women: 30mm|
|Forefoot height:||Men: 24mm | Women: 24mm|
|Type:||Heavy | Big guy | Low drop|
|Width:||Men: Normal | Women: Normal|
- Winter-Optimized running experience is what the Merrell MTL Astrum is aiming to provide. This running gear boasts a bevy of technologies that are meant to better the performance of the runner on soft and wet ground. The outsole unit has been configured to handle slushy topography. In contrast, the upper has been specifically designed to stave off the cold and wetness associated with snow and mud.
The Merrell MTL Astrum is designed to be true to size. Runners are meant to use their usual sizing choices when vying for a pair. However, there have been reports that the fit is a bit loose or inconsistent, so being able to adjust expectations can be influenced by the personal testing of this shoe.
This shoe doesn’t have a bulky construction, yet it features a high-top collar and a seamless build that averts chafing. The natural curve of the foot is accommodated by the curved platform and the foot-shaped upper unit.
The outsole unit of the Merrell MTL Astrum uses a triple-density Vibram® compound. The grippy nature of this material is for the provision of traction across a variety of surfaces. It is also meant to be durable enough to withstand abrasion general wear.
Clawlike traction lugs are fashioned all over the external pad. These individual protrusions are tasked with clamping onto the ground, delivering surface steadiness that can improve the overall performance of the runner. The even spacing of the lugs prevents snow or mud from caking the outsole and causing discomfort or adding unnecessary weight.
The midsole unit of the Merrell MTL Astrum is made of compression-molded ethylene vinyl acetate (CMEVA). This technology is an industry-standard one. It offers reactive cushioning in a lightweight package. It can even encourage energized steps because of its slightly spongy nature.
TrailProtect™ is the name of a rock plate that is placed between the outsole and the midsole. This add-on is tasked with shielding the foot from debris and sharp surface on the trails.
An insole is placed above the primary cushioning unit. This accouterment offers an extra layer of softness for the underfoot to enjoy. It has a heat-reflecting capacity that maintains a warm in-shoe feel, especially when tackling cold conditions.
The upper unit of the Merrell MTL Astrum is made of a synthetic mesh, the job of which is to cover the foot and keep it secure at all times. Despite the net-like structure, the vents deliver on the promise of a warm sensation when exposed to the cold of winter. Water is also repelled by this material.
A Lycra® high-top collar graces the foot with an internal wrap that is stretchy and seamless. The slip-on nature of this shoe-part is for a quick and effortless on-and-off experience. Anatomical positioning and movement are also encouraged by this technology.
A speed lacing system is used for this running shoe. The one-pull technique that is involved with this feature prevents runners from taking too much time adjusting the fit. Many running shoe series feature quick-lace in some form, including the revered Salomon Speedcross line.