Blue Tortoise Plant Based Polarized Square Frame Sunglasses

Blue Tortoise pairs two classics in a single frame. The face is cut from translucent cobalt bio-acetate that glows electric blue in the sun, and the temples switch to a rich amber tortoise, so the frame shifts from cool to warm the moment you turn your head.

Smoke gray TAC polarized lenses sit inside the blue for a clean, sharp contrast, cutting glare off water, glass, and pavement while keeping colors true.

Cool Meets Warm

Blue brings calm and clarity, and tortoise brings warmth and heritage. Together they make a frame that feels balanced on the face and works with nearly everything in your closet, from a white linen shirt to a match-day jersey.

When to Wear It

Game days, boat days, and long afternoons by the water. The cobalt face draws the eye from across the room, and the tortoise arms keep the look grounded up close.

Lens Details

• TAC polarized lenses in smoke gray
• Cuts reflected glare from water, pavement, and glass
• Full UV400 protection against UVA and UVB rays

Frame Details

• Plant-based bio-acetate made from renewable wood pulp and cotton fibers
• Translucent cobalt blue face with amber tortoise temples
• Premium hinges for a firm, balanced fit
• Bold square silhouette, one size fits all

In the Box

Every pair arrives in the signature orange Ison Couture presentation box with our Lens Care Kit included free: a 2 fl oz bottle of Ison Couture lens cleaner, a microfiber cleaning cloth and a branded microfiber travel pouch. One bottle is good for hundreds of cleanings.

Explore the full Plant Based Polarized Collection.