Crewneck Sweatshirt S-5XL — 'Aluminium Ratio' Number Sequence Graphic
A cozy, thoughtfully made crewneck that speaks to anyone who loves clever science humor and minimal, bold design. The black sweatshirt carries clean white text reading “Aluminium Ratio” followed by a string of numbers — a subtle, nerdy nod that invites double-takes and quiet smiles. It’s soft against skin, holds its shape, and wears like a dependable layer for study sessions, late-night lab work, commuter chills, or relaxed weekends with friends. The unadorned back keeps the focus on the front’s statement, so the wearer can show off a bit of personality without shouting. Comfortable, durable, and lightly playful — this sweatshirt fits into the rhythm of everyday routines where curiosity and comfort meet.
Product features
- Medium-heavy 50/50 cotton-poly blend (8.0 oz/yd²) for balanced warmth and durability
- Tubular knit construction (no side seams) and ribbed collar for shape retention and reduced fabric waste
- Double-needle stitching at shoulders, armholes, neck, waistband, and cuffs for reinforced durability
- OEKO-TEX® certified dyes, ethically grown US cotton (US Cotton Trust Protocol), and safety compliance details
Care instructions
- Machine wash: cold (max 30C or 90F)
- Non-chlorine: bleach as needed
- Tumble dry: low heat
- Do not dryclean
- Do not iron
Without side seams
Knit in one piece using tubular knit, it reduces fabric waste and makes the garment more attractive
Ribbed knit collar with seam
Ribbed knit makes the collar highly elastic and helps retain its shape
Embroidery
Embroidery decoration method available on either left chest, center chest, or large center chest, as well as right + left wrists
Age restrictions
For adults
Other compliance information
Meets the flammability, lead, cadmium, bisphenols and phthalates level requirements.
Country of origin
Made in Nicaragua
DTF inner neck labels
The inner neck labels and wrist prints are printed using the Direct-to-Film (DTF) print method, while the rest of the prints are done with the Direct-to-Garment (DTG) method.
Do not dryclean; Do not iron; Machine wash: cold (max 30C or 90F); Non-chlorine: bleach as needed; Tumble dry: low heat.
Accurate shipping options will be available in checkout after entering your full address.
Any goods purchased can only be returned in accordance with the Terms and Conditions and Returns Policy.
We want to make sure that you are satisfied with your order and we are committed to making things right in case of any issues. We will provide a solution in cases of any defects if you contact us within 30 days of receiving your order.
See terms and conditionsCharlotte Place Design is an ecommerce print-on-demand retail shop operating through a Printify Pop-Up Shop storefront. Order fulfillment is supported through Printify’s production and delivery infrastructure. Printify is one of the largest print-on-demand groups globally, providing services for, amongst others, Etsy customers. At present the urls charlotteplacedesign.com, charlotteplaceart.com, CPDesign.com all point to this site.
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Designs © 2026 Charlotte Place Design
and Christopher Fayers