Batch 01 spec sheet
Draft dated 8 October 2026.
Batch 01 is the first Symbiosis pre-order. The cloth is a hemp blend. We will print a fiber percentage only after the factory confirms the fiber in the goods we are making. Until that note is in hand, the line on the garment is hemp blend, not a number.
A spec sheet is the short list of decisions we can stand behind today, plus the tests we have not run. It is not a claim that the clothes are perfect. It is not a sun-protection rating, a medical textile, or a lifetime replacement program.
Batch record
| Field | What we can print now |
|---|---|
| Batch | 01 |
| Draft date | 8 October 2026 |
| Fiber line | Hemp blend |
| Fiber percentage | Not confirmed. Do not print one. |
| Cloth weight, yarn count, dye lot | Blank until we have them from the finished goods |
| Photo status | Frames not approved |
| Fit notes | Not written. We have not published a fit trial. |
Prices
These are the draft shelves for Batch 01. They are not live.
| Style | Price | How it is offered |
|---|---|---|
| Men's Air Weave Tee, style TBD004, men and women | $44 | First checkout |
| Men's Boxer Shorts, style TBD001 | $30 | First checkout |
| Men's Boxer Shorts, three | $81 | First checkout |
| Women's boy short | $32 | First checkout |
| Drawstring short | $64 | First checkout |
| Hemp Work Pant | $108 | Waitlist price |
| Men's Hemp Hoodie, style TBD002 | $108 | Waitlist price |
| Men's Structured Hemp Jogger, style STY00002 | $128 | Waitlist price |
The Men's Air Weave Tee, the Men's Boxer Shorts, the Women's Boy Short, and the Drawstring Short are the styles a shopper can check out in this draft. The Hemp Work Pant, Men's Hemp Hoodie, and Men's Structured Hemp Jogger stay on a waitlist at the prices above. A waitlist price is a number we are willing to hold. It is not an open checkout, and it is not sent to Stripe.
Draft commercial terms
These sentences are a draft policy for the pre-order. They are not legal advice.
- Shipping is free when the order reaches $88.
- If a style does not reach its factory minimum, the draft policy is a full refund of what was paid for that style.
- There is no lifetime warranty, and there is no multipack offer dressed up as a prize.
This draft does not publish factory cost. Those figures are not part of the customer spec.
Test notes
The textile study behind this batch of drafts is Grifoni and colleagues, 2009, Photochemistry and Photobiology. The file we read is Photochem Photobiology - 2009 - Grifoni - Laboratory and Outdoor Assessment of UV Protection Offered by Flax and Hemp.rtf.
That paper measured woven flax and hemp cloth in a lab spectrophotometer and outdoors near Florence. It did not measure a Symbiosis knit. The numbers below describe those study fabrics. They are not a Batch 01 specification, and we will not print them on a Symbiosis label.
On the undyed hemp fabric in that study:
- Weight 173 g/m², thickness 0.67 mm, yarn count 17 by 16 per centimeter, cover factor 96.2%.
- Outdoor ultraviolet protection factor (UPF) was 5.8.
- The paper uses the Australian / New Zealand categories, where 15 is the start of good protection. Undyed hemp in this test sat below that line.
- In the lab, transmittance of the undyed hemp rose from about 12% at 296 nm to 22% at 396 nm.
Dye and construction changed the result. Outdoor UPF on the hemp fabrics ran from 5.8 undyed to 29 for the weld-dyed cloth. The paper calls that weld result very good protection. Aside from the undyed cloth and the cochineal dyeing, the other hemp dyeings reached at least good protection outdoors. In the lab, hemp dyed with colors other than cochineal, brasilwood, and lipsticktree had UPF values from 16 to 19. Lab UPF was generally lower than outdoor UPF on the same cloth. The authors' conclusion is that the lab method is repeatable and that it tends to underestimate the protection measured outside.
The discussion is just as useful as the high number. Undyed fabrics of flax, cotton, and hemp were not perfect UV filters. Heavier, thicker cloth with a higher cover factor transmitted less UV. A 1% change in cover, once cover is already high, can move UPF a long way. Hemp as a fiber name did not, by itself, make the cloth protective.
The introduction, citing other work, notes that synthetic fibers such as polyester can offer good UV protection, and that they are water-repellent and therefore uncomfortable in high heat. We record that so we do not pretend a plant fiber automatically wins a sun test. We also do not turn it into a scolding of anyone who wears polyester.
Batch 01 test log
| Test | Status |
|---|---|
| Fiber percentage on our goods | Not confirmed |
| UPF on our goods | Not tested |
| Antibacterial, odor, or skin testing on our goods | Not in this draft |
| Softness after washing | Not recorded |
| Photos | Frames not approved |
What the batch is for
Symbiosis exists to offer hemp clothing that keeps a daily garment inside a larger relationship with the ground it came from. Batch 01 is one practical step: a hemp blend you can pre-order, with the tests we still owe you written in the open.
The individual offer is the checkout list above. How the cloth feels in heat, how it softens, and how it wears are sentences we will earn after the finished goods have been washed and worn. We have not earned them yet.
The same draft is also stored as markdown. The companion note is what we mean by the hemp blend.