Negative Pressure. Positive Work Ethic. — Xylem Tee
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Some people work well under pressure. Trees built a whole system around it.
Beneath the bark, xylem carries water and dissolved minerals from the roots toward the canopy. As water evaporates from the leaves, it creates tension that pulls more water upward. Water molecules hold together through cohesion, helping that pull travel down the column. The name for it is cohesion–tension. The work ethic speaks for itself.
Our Negative Pressure. Positive Work Ethic. tee turns that hidden process into something worth wearing: cream lettering, blue-and-ivory flowing lines, and a little xylem knowledge woven into the artwork. The graphic sits up front, with the official Knotty Intentions logo at the back neck.
Made for arborists, gardeners, and anyone who has ever stopped mid-walk to explain what a tree is doing. A good shirt. A better conversation starter.
The details
- Black Comfort Colors 1717 heavyweight tee
- 100% ring-spun cotton, 6.1 oz/yd²
- Garment-dyed, pre-shrunk fabric with a relaxed fit
- Xylem artwork on the front; KI branding at the back neck
- Blank garment sourced from Honduras; printed to order
Fit & care
Compare the size guide with a favorite tee before choosing your size. Garment dyeing can create slight color variations. Wash cold, inside out, with like colors. Tumble dry low or hang dry; do not iron the print.
Size guide
| WIDTH (inches) | LENGTH (inches) | SLEEVE CENTER BACK (inches) | |
| S | 18 ¼ | 26 ⅝ | 16 ¼ |
| M | 20 ¼ | 28 | 17 ¾ |
| L | 22 | 29 ⅜ | 19 |
| XL | 24 | 30 ¾ | 20 ½ |
| 2XL | 26 | 31 ⅝ | 21 ¾ |
| 3XL | 27 ¾ | 32 ½ | 23 ¼ |
| 4XL | 29 ¾ | 33 ½ | 24 ⅝ |
| WIDTH (cm) | LENGTH (cm) | SLEEVE CENTER BACK (cm) | |
| S | 46.4 | 67.6 | 41.3 |
| M | 51.4 | 71.1 | 45 |
| L | 55.9 | 74.6 | 48.3 |
| XL | 61 | 78.1 | 52 |
| 2XL | 66 | 80.3 | 55.3 |
| 3XL | 70.5 | 82.6 | 59 |
| 4XL | 75.6 | 85 | 62.6 |