KOIO

Organic Cotton No Show Socks

Spend $250, Get 2 Pairs Free

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KOIO

Organic Cotton No Show Sock

Made from a unique blend of certified organic cotton and innovative 'aerolight'™ fiber, our Organic Cotton No Show socks are too good to show off. Literally. Comfortable yet low-cut to sit undetected, they're the perfect union of fashion and function. Their specially designed and patented silicone feature keeps your sock in place and your feet in comfort.

Only available in colors Arctic White & Mirage Gray, sizes S-XL

Organic Cotton No Show Sock

Made from a unique blend of certified organic cotton and innovative 'aerolight'™ fiber, our Organic Cotton No Show socks are too good to show off. Literally. Comfortable yet low-cut to sit undetected, they're the perfect union of fashion and function. Their specially designed and patented silicone feature keeps your sock in place and your feet in comfort.

Only available in colors Arctic White & Mirage Gray, sizes S-XL

Offer eligible on orders over $250 before taxes. Offer eligible while supplies last.

Free Shipping & Easy Returns

Terms

Free shipping applies only to domestic orders in the Contiguous United States totaling $150+. Returns have a $9.95 shipping label fee, which will be waived if you opt for a store credit refund.

Promotions cannot be combined for additional discounts. Accessories are excluded from any site promotion.

Items on sale with less than a 50% discount are eligible for exchange only. Exchange Only items cannot be refunded, but can be exchanged for a different size, a different item, or store credit.

Final Sale items are heavily discounted and cannot be returned or exchanged.

Men

Mello

$345 $345 $25 off your first order

Size

Only 8 left in stock

Details

Introducing the Mello, a first-of-its-kind luxury sneaker that restores the planet—and biodegrades back into it. Handcrafted in Italy with vegetable-tanned regenerative leather from the Swiss Alps, this Castagna colorway is set on a lightweight and durable LACTAE HEVEA® sole that's handmade from responsibly sourced hevea-tree milk. The recycled corn, wool, and kenaf insole delivers cushioned comfort all day long.

Important information: Our Castagna leather is a vegetable-tanned premium Italian leather. Thanks to this tanning method and the hand-polishing, it attains a unique depth and sheen. It will age gracefully and change its appearance slightly over time. Given the natural tanning process, you can expect variations from the images shown. These variations are a result of the manufacturing process and a testament to the high-quality craftsmanship we pursue. 

The outsoles may differ in shades of 'cream' due to the different levels of carotene in hevea milk tree which is the natural property of a biodegradable sole.

  • Handmade in Tuscany, Italy
  • Constructed from vegetable-tanned full-grain regenerative leather (Cow)
  • Partially lined with LWG-certified Italian leather (Cow)
  • Set on a 100% natural LACTAE HEVEA® sole
  • The outsoles may differ in shades of 'cream' due to the different levels of carotene in hevea milk tree
  • Tightly stitched for water resistance
  • Threaded with organic cotton laces
  • Fitted with a removable biodegradable insole (Recycled corn, wool, kenaf)
  • There may be slight variations in color or pattern from the images shown due to the material being vegetable-tanned

Size & Fit


  • Fits true to size. Take your normal US size.
  • Only available in full sizes. Go up to the nearest whole size if you wear a half size.
  • Width D - Standard
  • Unlined construction, has a soft feel and relaxed fit.
  • Width can be adjusted by tightening/loosening the laces.
  • Not sure of your size? Reach out to our team for a recommendation.

    Sustainability

    Regenerative leather: Our regenerative leather is sourced from regenerative farms in the Swiss Alps. These farms are reviving Alpine ecosystems by reversing carbon emissions, restoring soils, and increasing biodiversity. Learn more here.

    LACTAE HEVEA® sole: LACTAE HEVEA® soles are made in France using responsibly sourced milk from hevea trees. The entire process—from sourcing the milk to pouring it into molds—is completed by hand.

    Organic cotton: This sneaker's laces are certified organic, meaning the fibers are organically grown and manufactured without harmful chemical inputs.
    Biodegradable materials: This sneaker's upper, laces, insole, and sole are biodegradable.

    Shipping & Returns

    Shipping 

    Receive free ground shipping (3-5 business days) on all orders over $150. Read more about our shipping options here.

    Returns/Exchanges

    We accept returns and exchanges of most unworn and unused products within 14 days of purchase.

    Size Guide

    How it fits

    The Men's Mello fits true to size. If you wear a half size, we recommend you size up.

    US

    7

    8

    9

    10

    11

    12

    13

    UK

    6

    7

    8

    9

    10

    11

    12

    EU

    40

    41

    42

    43

    44

    45

    46

    We use standard US sizing on all styles.

    Mello in Castagna Regenerative

    Added the Mello in Castagna Regenerative Size 9 to your bag.

    Bundle and Save 30% on Accessories

    Koio Shoe Tree

    Koio Shoe Tree

    $21$30

    Crafted from cedar wood and helps maintain the shape of your Koios.

    Koio Dust Bag

    Koio Dust Bag

    $8.40$12

    Protect your Koios from dust, dirt, and scratches during storage and travel.

    Koio Eco Protect

    Koio Eco Protect

    $17.50$25

    Creates a water-resistant barrier and prevents stains.

    Subtotal

    $46.90 $67 (Saving 30%)

    ×

    KOIO

    99% biodegradable

    Heavy-metal free regenerative leather

    100% natural LACTAE HEVEA® sole

    Insole made from plants like corn and kenaf

    Organic cotton laces

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    Exchange/store credit. $20 restock fee. Mello in Castagna Regenerative

    To sell this item at its deeply discounted price while also maintaining responsible business practices, we need to charge a $20 restocking fee for exchanges.

    Eligible for exchange/store credit only.Mello in Castagna Regenerative

    This item is deeply discounted and as such, it cannot be returned for a refund. However, you may exchange it for a different item or store credit.