Planck's Constant by acrossTPB Unisex T-shirt, Sweatshirt, Hoodie, Long Sleeve Tee
Planck's Constant by acrossTPB Unisex T-shirt, Sweatshirt, Hoodie, Long Sleeve Tee
Bold Design, Soft Fabric — Your New Everyday Favorite
Some clothes you wear. This one wears confidence for you. DTG-printed on buttery-soft Gildan® blanks — the kind of quality you feel the second you put it on.
📸 Mockup is a tee — but we’ve got you covered. This design ships on 4 styles: T-Shirt, Long Sleeve, Crewneck & Hoodie. Your call, your style, made just for you.
Why This Stands Out
- 🎨 No Cheap Print Here — We don’t do vinyl or heat press. Pure DTG — ink in the fabric, color that lasts.
- 🧵 Not Your Average Blank — Gildan® Ultra Cotton & Heavy Blend — the same blanks top brands trust.
- 👕 Comfort First, Always — Taped neck, reinforced shoulders, tear-away tag. Built for all-day wearability.
- 🇺🇸 From American Farms — US Cotton Trust Protocol certified. The good stuff, sourced the right way.
Fabric & Construction
- T-Shirt (5.3 oz) & Long Sleeve (6 oz): 100% cotton — airy, comfortable, all-season wear.
- Sweatshirt & Hoodie: 50/50 cotton/polyester (8 oz) — warm, pill-resistant, rib with spandex.
- Note: Sport Grey contains a 90/10 cotton/poly blend for color consistency.
Choose Your Style
Browse colors and sizes to find your perfect match:
Available Colors
Gildan 5000 — Unisex T-Shirt
| Size | Length | Bust |
|---|---|---|
| S | 28 in (71.1 cm) | 36 in (91.4 cm) |
| M | 29 in (73.7 cm) | 40 in (101.6 cm) |
| L | 30 in (76.2 cm) | 44 in (111.8 cm) |
| XL | 31 in (78.7 cm) | 48 in (121.9 cm) |
| 2XL | 32 in (81.3 cm) | 52 in (132.1 cm) |
| 3XL | 33 in (83.8 cm) | 56 in (142.2 cm) |
| 4XL | 34 in (86.4 cm) | 60 in (152.4 cm) |
Gildan 18000 — Unisex Sweatshirt
| Size | Length | Bust | Sleeve |
|---|---|---|---|
| S | 27 in (68.6 cm) | 40 in (101.6 cm) | 33.5 in (85.09 cm) |
| M | 28 in (71.1 cm) | 44 in (111.8 cm) | 34.5 in (87.63 cm) |
| L | 29 in (73.7 cm) | 48 in (121.9 cm) | 35.5 in (90.17 cm) |
| XL | 30 in (76.2 cm) | 52 in (132.1 cm) | 36.5 in (92.71 cm) |
| 2XL | 31 in (78.7 cm) | 56 in (142.2 cm) | 37.5 in (95.25 cm) |
| 3XL | 32 in (81.3 cm) | 60 in (152.4 cm) | 38.5 in (97.79 cm) |
| 4XL | 33 in (83.8 cm) | 64 in (162.6 cm) | 39.5 in (100.33 cm) |
Gildan 18500 — Unisex Hoodie
| Size | Length | Bust |
|---|---|---|
| S | 27 in (68.6 cm) | 40 in (101.6 cm) |
| M | 28 in (71.1 cm) | 44 in (111.8 cm) |
| L | 29 in (73.7 cm) | 48 in (121.9 cm) |
| XL | 30 in (76.2 cm) | 52 in (132.1 cm) |
| 2XL | 31 in (78.7 cm) | 56 in (142.2 cm) |
| 3XL | 32 in (81.3 cm) | 60 in (152.4 cm) |
| 4XL | 33 in (83.8 cm) | 64 in (162.6 cm) |
Gildan 2400 — Unisex Long Sleeve Tee
| Size | Length | Bust | Sleeve |
|---|---|---|---|
| S | 27.95 in (71 cm) | 36.22 in (92 cm) | 33.46 in (85 cm) |
| M | 29.13 in (74 cm) | 40.16 in (102 cm) | 35.04 in (89 cm) |
| L | 29.92 in (76 cm) | 44.09 in (112 cm) | 36.61 in (93 cm) |
| XL | 31.1 in (79 cm) | 48.03 in (122 cm) | 38.19 in (97 cm) |
| 2XL | 31.89 in (81 cm) | 51.97 in (132 cm) | 39.37 in (100 cm) |
| 3XL | 33.07 in (84 cm) | 55.91 in (142 cm) | 39.37 in (100 cm) |
| 4XL | 33.86 in (86 cm) | 59.84 in (152 cm) | 38.98 in (99 cm) |
Tap a style above to view its chart. Measured laid flat.
- Browse colors and compare with the chart.
- Use the size guide for the best fit.
- Add to cart and you’re all set!
Shipping & Delivery
- ✅ Made in: 1–3 business days.
- 📦 US Shipping: 3–7 business days.
- ⚡ Rush Delivery: 3–5 business days.
- 🌍 Worldwide: 1–2 weeks.
Every item is made to order just for you. Please verify your size using the chart above. We can’t accept returns for sizing errors, but we’re always here to help if something isn’t right.
🛒 See our full range at vintageinklab.com. Premium quality, every single time.