New York CNN  — 

You can now buy a single sandal or sneaker from Zappos, or even mixed size pairs of running shoes.

It’s part of a push by the online retailer to cater to shoppers who naturally have different sized feet, as well as those with prosthetics, which can create a need for mixed sized shoes.

Initially, Zappos, which is owned by Amazon (AMZN), will offer the option for six brands – Nike, BILLY Footwear, Converse, PLAE, Stride Rite, and New Balance. The shoes will be available beginning Tuesday in all size and widths, from toddler to adult, and they range in price from $17.50 to $85.

Zappos is now selling single shoes and mixed size pairs from select brands for customers with different needs.

The news comes at a time when the market for footwear designed to meet the needs of people with disabilities and specific health conditions is growing. It is expected to reach $10.6 billion by 2024, up from $8 billion in 2020, according to market research firm Coresight Research.

Zappos already sells an assortment of shoes for people with disabilities or dexterity issues, with features like zippers around the front or back for easy access to put on or take off the shoes.

Zappo's single shoe and mixed size pairs test rollout will include six brands and sizes from toddler to adult.

“But we’ve been getting many requests over the years from people asking us if we can also sell them a single shoe or different sized pairs,” said Dana Zumbo, business development manager with Zappos Adaptive, the company’s program that caters to shoppers with disabilities.

Once an order is placed for single or mixed-sized shoes, Zumbo said it will be fulfilled from Zappos’ existing inventory and specially packaged at its warehouse.

“The shoes will be put in a resealable bag and then in a Zappos white box for shipping,” she said.