If you want a street bench that looks modern but still feels good for long sits, don’t just chase a slim profile. The most comfortable modern benches tend to share a few design details: a gently curved or contoured seat, a backrest angle around 100–110 degrees, armrests at the right height, and materials that don’t bake in summer or freeze in winter.
My suggestion is to look for a wood-and-aluminum slat bench with a slightly reclined backrest. The powder-coated aluminum frame keeps the silhouette sharp and weather-resistant, while wide wooden slats—ideally FSC-certified Iroko, oak, or thermally modified ash—give it warmth and a more forgiving seat than metal or stone. A seat depth of about 17–20 inches helps distribute pressure under your thighs, and a subtle seat pitch prevents you from sliding forward.
For long sitting, avoid completely flat backless benches or ultra-minimal concrete slabs. Instead, choose a modern street bench with lumbar-friendly back support and optional armrests. Brands like Vestre, mmcité, Streetlife, or Landscape Forms have good examples, but the key thing is the geometry: if the backrest supports your lower back and the seat has a slight curve, you can sit comfortably for an hour without it feeling like a design statement first.
So if you want one specific recommendation: pick a contemporary slat bench with a curved seat profile, angled backrest, and armrests in a warm wood finish over a black or graphite aluminum base. It reads modern, but it actually works for long sits.