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Join the Latens Observatory

Notes on science, philosophy, and new designs. No noise. Only signal.

Only If - T-Shirt

Sale price$49.00 USD

Premium 180gsm organic cotton · Printed in the UK
Free shipping · 30-day fit guarantee

For those who think in systems, not trends.
A structured, heavyweight T-shirt designed for clarity, presence, and daily wear.


A clean logic design built around one of the most precise ideas in formal reasoning: a necessary condition is not the same thing as a sufficient one. The artwork pairs NECESSARY and NOT SUFFICIENT with a directional symbol language that makes the idea visual at a glance. Minimal, sharp, and quietly playful, Only If is for people who like mathematics, logic, philosophy, and the beauty of exact thinking.

Color:
Size:
Sizing

Measure yourself

A Length

Place the end of the tape beside the collar at the top of the tee (Highest Point Shoulder). Pull the tape measure to the bottom of the shirt.

B Chest

Measure yourself around the fullest part of your chest. Keep the tape measure horizontal. 

C Sleeve length

Place one end of the tape at the top of the set-in sleeve, then pull the tape down until you reach the hem of the sleeve.

NB

This garment follows EU sizing.

Size Chart - Centimetres

Size Length Chest Sleeve length
XS 65 71 - 76 21
S 69 78.7 - 86.4 22.5
M 73 89 - 96.5 24
L 75 99 - 104 24.5
XL 77 106.7 - 114.3 25
2XL 79 116.8 - 122 25.5

 

Size Chart - Inches

Size Length Chest Sleeve length
XS 25 5⁄8 28 - 30 8 1⁄4
S 27 ⅛ 31 - 34 8 ⅞
M 28 ¾ 35 - 38 9 ½
L 29 ½ 39 - 41 9 ⅝
XL 30 ¼ 42 - 45 9 ⅞
2XL 31 ⅛ 46 - 48 10

Fit: Unisex · Regular fit · True to size
Size up if you prefer a looser fit

Printed to order in the US — not mass produced

Free shipping · No hidden fees
30-day fit guarantee · Free returns

Buy 2+ T-shirts, save 10%
Mix and match any 2+ tees
Discount applies automatically

Secure checkout — Cards, Apple Pay, Google Pay, Shop Pay, PayPal

Printed to order in the UK · 2–5 business days
Delivery (business days, order to door)

US: 5–7

Questions? hello@latens.space (reply within 24h)

Designed in Oxford · First collection from Latens

Product mockup
Only If - T-Shirt Sale price$49.00 USD