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OIO | NYD — Not Yet Defined
Designed for movement, intention, and presence.
The Flow Tank is made from 100% combed ring-spun cotton — soft-washed, breathable, and built to last. Whether worn during a workout, layered on the move, or as a reflection of simplicity itself, it carries the essence of being Not Yet Defined.
100% combed ring-spun cotton
Soft-washed, mid/heavyweight fabric (5.5 oz/yd²)
Relaxed fit with drop armhole cut
Durable and smooth finish
Ethically sourced from Bangladesh
Minimal design. Maximum comfort.
Edition O - The Origin Series
Free worldwide shipping.
This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!
Age restrictions: For adults
EU Warranty: 2 years
Other compliance information: Meets the flammability, lead, cadmium, bisphenols and phthalates level requirements.
In compliance with the General Product Safety Regulation (GPSR), Oak inc. and SINDEN VENTURES LIMITED ensure that all consumer products offered are safe and meet EU standards. For any product safety related inquiries or concerns, please contact our EU representative at gpsr@sindenventures.com. You can also write to us at 123 Main Street, Anytown, Country or Markou Evgenikou 11, Mesa Geitonia, 4002, Limassol, Cyprus.
Size guide
| LENGTH (inches) | WIDTH (inches) | |
| S | 28 | 18 |
| M | 29 | 20 |
| L | 30 | 22 |
| XL | 31 | 24 |
| 2XL | 32 | 26 |
| 3XL | 33 | 28 |
| LENGTH (cm) | WIDTH (cm) | |
| S | 71.1 | 45.7 |
| M | 73.7 | 50.8 |
| L | 76.2 | 55.9 |
| XL | 78.7 | 61 |
| 2XL | 81.3 | 66 |
| 3XL | 83.8 | 71.1 |