Zoom SD 4 Size:9/10.5 two-strap wonder from Birkenstock

two-strap wonder from Birkenstock

85% more elastic

Dynamic Tension Splint

the updated version of the Echo Insulated Jacket keeps the same ultra-soft handfeel and lightweight profile

Zoom SD 4 Size:9/10.5 two-strap wonder from BirkenstockThe Nike Zoom SD 4 delivers a contoured support for elite level performance. The no sew upper provides seamless comfort while the midfoot strap and Flywire cables wrap under the arch, helping to minimize internal movement as you're preparing to launch. Benefits Forefoot molded plastic plate provides durability underfoot. High abrasion rubber gives you ground gripping traction. Flexible, textured outsole helps provide traction in wet conditions.