Size Chart
Here's how to measure your feet.
Follow these simple steps to find your size:
01 Preparation
Place a sheet of paper flush against a wall. Stand on it barefoot, with your heel touching the wall.
02 Measure the length.
Mark the tip of your longest toe and the end of your heel. The distance between the marks is the length of your foot.
03 Measure the width.
Mark the widest part of your forefoot at the level of the balls of your feet. The distance between the marks is your foot width.
04 Find size
Use your values for the size table on the respective product page. Each size table is individually tailored to the model.
Note: So that your feet have enough freedom of movement, the rolling room (about 5 - 12 mm) has already been included in our size table. So you can orient yourself directly to your measured foot length.
Special features
Description
A sporty, understated sneaker for everyday urban life. The Universe sneaker combines a modern, sporty design with a striking, clean upper and our TrueSense® technology. Lightweight, flexible, and comfortable all day long. Versatile and easy to pair—for everyday wear, city life, and natural movement.
Size & Fit
Size Chart
The 3 fits
All three fits strengthen your core and help you feel the ground. There's no right or wrong—just your personal fit.
Barefoot Light Fit: Ideal for very narrow feet.
Barefoot Fit: With an anatomically shaped toe box. Ideal for narrow to medium-width feet.
Barefoot+ Fit: With an anatomical toe box. Ideal for wide feet.
The sizes in which your desired item is available vary depending on the style and color.
Shipping and returns
Shipping
Our current delivery time is approximately 4–7 business days.
Returns
Returns can be conveniently registered via our Returns portal.
The 5 TrueSense® Principles
Toe Freedom
Your toes have room to move freely. This gives you more stability and a secure feeling with every step.
Zero Drop
Heel and forefoot are on the same level. Your body aligns more naturally.
Flexible Sole
The sole follows your natural movement. Your muscles stay active and are strengthened in everyday life.
Design & Quality
Together with our partners, we create shoes from high-quality materials and precise craftsmanship that support the natural movement of your feet.
Minimal Sole Thickness
You feel the ground again. Direct feedback makes your movement more precise and conscious.
14-day test guarantee
14 Days. Zero Risk. Test them now.
Wear them. Use them. Go out in them. Test our shoes with the unique TrueSense® technology for 14 days in everyday life. Completely risk-free.
How does the 14-day test guarantee work?
The test period starts as soon as you receive your Groundies. You can return them within 14 days, stating the test guarantee as the reason.
Can I wear the shoes outdoors too?
Yes, you can test the shoes properly outdoors too.
What condition do the shoes need to be in for me to return them?
It doesn't matter what condition the shoes are in at the end. We want you to really test them properly.
How does the return process work?
You can conveniently register your return via our returns portal. Simply select the option '14-day test guarantee'.
After successful registration, you will receive your return label.
Terms
Since 17.04.2026, you can test our shoes in everyday life for 14 days from receipt. If you are not satisfied within this period, you can return them, stating the 14-day test guarantee as the reason.
We accept returns under the 14-day test guarantee, including normal use indoors and outdoors. The decisive factor is receipt of the return or proof of dispatch within 14 days of receiving the goods. After the 14-day period, returns under the test guarantee are no longer possible. Statutory withdrawal rights remain unaffected. This offer is valid until revoked.
Manufacturer information
EAN/GTIN:
4251723798637
Model number:
GND-210055-5040
Manufacturer
Name:
Groundies GmbH
Address:
Groundies GmbH, Heinrich-von-Stephan-Straße 17, 79100 Freiburg im Breisgau, Germany
Contact:
support.groundies.com/hc/de/
What size do I need?
The best way is to measure your feet before placing your order. Here’s how:
1. Stand barefoot on a sheet of paper.
2. Draw a line to mark where your longest toe ends.
3. Measure the length from your heel to your longest toe.
4. Compare your foot length to the size chart—you’ll find it right on the product page next to the size selector.
Important: Each Groundies model has its own size chart. Please always refer to the information provided for the specific shoe.
Our tip: If you're unsure between two sizes, we recommend choosing the larger one. Barefoot shoes should fit a bit loosely. A gap of about 1 cm in front of your toes is ideal—this gives you enough room as you roll your foot and prevents pressure on your toes.
You can also find detailed step-by-step instructions here:
What are the unique features and benefits of Groundies?
All of our soles are flat, flexible, and Zero Drop—meaning they have no heel-to-toe drop. They provide an authentic barefoot feel and differ primarily in design, tread pattern, and material thickness. This allows you to choose between particularly minimalist soles for maximum ground feel or options with more grip and stability.
Whether you're strolling through town, walking along a forest trail, working in the office, or doing yoga—every activity places different demands on your shoes. That's why we offer a variety of TrueSense® soles designed to optimally support that barefoot feeling depending on the activity. This way, you'll always find the perfect foundation for a natural barefoot experience while walking.
How do Groundies feel when worn in everyday life?
Groundies barefoot shoes mimic the natural feeling of walking barefoot and protect your feet from sharp objects and the cold. Thanks to a combination of high-quality materials and our sensitive TrueSense® sole, Groundies barefoot shoes offer you a walking experience that feels especially natural and is built to last.
What are the differences between the soles?
Our Groundies soles vary in flexibility, tread depth, and fit: from particularly thin and flexible soles that provide maximum ground feel to slightly thicker soles that offer more protection for everyday use or outdoor activities.
Depending on the model, the width of the toe box also varies between Barefoot Fit, Barefoot+, and Barefoot Light.
No matter what you choose, our TrueSense® technology ensures you always feel natural and comfortable.
