As high-intensity training has evolved over the past five years, so to has the quintessential cross-trainer shoe. Nike has just updated their popular Metcon sneaker. Version six has a new breathable mesh upper designed to keep feet cool—but it's finished with a “haptic topcoat” for long-lasting abrasion resistance. It's more flexible than ever, but dual-density drop-in midsoles provide responsive cushioning and ultimate stability.

If you want simple shoes that stand apart from the crowd, you should consider a pair from this new NYC-based brand. They make stylish sneakers in a sustainable way from quality materials that are built to last. The uppers are cut from a super durable (yet still breathable) 240 industrial canvas, while a vulcanized outsole and rubber-wrapped toe box promises long-lasting durability. Inside, a proprietary countered footbed delivers the kind of comfort you never get with similar canvas shoes.

Oak Street Bootmakers' popular loafers are now available in stain-resistant snuff Repello suede by C.F. Stead. How do they get the suede to look and feel so good while ensuring it's protected? They work Scotchgard into the tanning process, so the stain protection deeply penetrates the hide and the proofing remains effective throughout the life of the shoe. That means you can get a lot more wear out of these comfortable and dapper slip-ons.

We're suckers for a revived archival sneaker. These classic Reebok runners from the '80s were given a shot of modern style by taking them monochromatic with pops of accent colors. The upper combines smooth leather, soft suede and sleek nylon for a nice mix of texture. And the tonal look of the matching midsole, lining and tongue label makes for a sophisticated look and feel.

This week, GREATS launched what they're calling their “most responsibly designed shoe to date.” The Royale Eco Canvas is crafted with 100% repurposed canvas twill, structured with recycled cotton, padded with Bloom algae foam removed from over-populated ecosystems. The lightweight and minimalist sneakers are supported by 100% natural rubber and laced together with recycled cotton laces. All that, and they ring in under a hundred bucks.