has Dr Martens  Goodyear-welted DNA

high-quality workmanship and the Birkenstock footbed

medial water drainage ports and minimally lined with a soft breathable microfiber

not merely glued like many footwear constructions

Either way

Sidas Cushioning Gel 3D Size:L has Dr Martens Goodyear-welted DNASidas 3D cushioning gel insoles are pre contoured insoles composed of a stabilizing shell that guarantees protection as well as two gel pads. The liquid gel pad at the front of the insole protects the forefoot, while the gel pad at the rear provides cushioning. Top layer: Cushioning & antibacterial Micro perforations: Breathable Gel: Cushioning 3D Shell : Foot support Dynamic Gel: Active cushioning