Celebrate Women’s Day with Us! Enter to win an $800+ giveaway bundle.
Celebrate Women’s Day with Us! Enter to win an $800+ giveaway bundle.

| Category | U.S. Size | Birkenstock Size |
|---|---|---|
| Women | 4–4½, 5–5½, 6–6½, 7–7½, 8–8½, 9–9½, 10–10½, 11–11½, 12–12½ | 35, 36, 37, 38, 39, 40, 41, 42, 43 |
| Men | 7–7½, 8–8½, 9–9½, 10–10½, 11–11½, 12–12½, 13–13½, 14–14½, 15–15½, 16–16½, 17–17½ | 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50 |
| Kids | 6–6½, 7–7½, 8–8½, 9–9½, 10–10½, 11–11½, 12–12½, 13–13½, 1–1½, 2–2½, 3–3½ | 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34 |
Sizing:
Add 31 to women's U.S. size and 33 to men's U.S. size to determine Birkenstock size.
Flex Footbed:
Flex the footbed before wearing to help it feel more comfortable sooner.
Step In:
Open all straps and step into the footbed. Leave ¼ inch of space around heels and toes for natural rolling motion.
Adjust Straps:
Close straps comfortably, allowing enough space for freedom of movement.
Take a Walk:
Take a few steps. If toes and heels do not hit the footbed edge, the fit is correct.
Recommendations:
Limit first 5–6 wearings to a few hours to allow the feet and body to adjust to the new support and straps.
$39.95 Size Guide

| Category | U.S. Size | Birkenstock Size |
|---|---|---|
| Women | 4–4½, 5–5½, 6–6½, 7–7½, 8–8½, 9–9½, 10–10½, 11–11½, 12–12½ | 35, 36, 37, 38, 39, 40, 41, 42, 43 |
| Men | 7–7½, 8–8½, 9–9½, 10–10½, 11–11½, 12–12½, 13–13½, 14–14½, 15–15½, 16–16½, 17–17½ | 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50 |
| Kids | 6–6½, 7–7½, 8–8½, 9–9½, 10–10½, 11–11½, 12–12½, 13–13½, 1–1½, 2–2½, 3–3½ | 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34 |
Sizing:
Add 31 to women's U.S. size and 33 to men's U.S. size to determine Birkenstock size.
Flex Footbed:
Flex the footbed before wearing to help it feel more comfortable sooner.
Step In:
Open all straps and step into the footbed. Leave ¼ inch of space around heels and toes for natural rolling motion.
Adjust Straps:
Close straps comfortably, allowing enough space for freedom of movement.
Take a Walk:
Take a few steps. If toes and heels do not hit the footbed edge, the fit is correct.
Recommendations:
Limit first 5–6 wearings to a few hours to allow the feet and body to adjust to the new support and straps.
Keep kids comfortable all day with the Birki Flow Big Kids shoe by Birkenstock. Designed with lightweight EVA construction, these easy slip-on shoes provide flexibility, durability, and water-friendly comfort for everyday adventures.
The ventilated design helps keep feet cool, while the contoured Birkenstock footbed offers supportive cushioning for all-day wear. Whether heading to the pool, playing outside, or relaxing at home, the Birki Flow is built for comfort, convenience, and active lifestyles.
Features:
Lightweight EVA construction
Contoured Birkenstock footbed for support and comfort
Ventilated design for breathability
Water-friendly and easy to clean
Slip-on style for quick on and off
Durable outsole for everyday wear