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Golden Ratio Crewneck Sweatshirt S-5XL — 'Golden Ratio (Divine Proportion) 1.618033988…' Math Graphic

$18.14
Sizes: S
Colors: Black
Quantity
30 days return policy.
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About the product

Soft, slightly oversized comfort meets quiet mathematical charm. This crewneck sweatshirt wears like a cozy lecture hall memory — warm, familiar, and quietly clever. The front bears a minimalist text design naming the Golden Ratio with its numerical approximation, an understated badge for anyone who loves geometry, design, or the little patterns that make the world feel ordered. The knit tubular construction and ribbed collar hold shape through repeated wear. Lightweight but substantial, it layers easily under coats or over shirts and becomes the go-to for study sessions, late-night coding, campus strolls, or museum afternoons. Keep it simple: this sweatshirt is for people who speak in sequences, sketch spirals in notebooks, and appreciate a clean, unadorned canvas that highlights one small, smart idea.

Product Type: Sweatshirt
Theme/Features: Golden Ratio (Divine Proportion) numeric text design, minimalist, math/geometry theme
Target Audience: math enthusiasts, designers, architects, students, STEM grads
Occasions: campus wear, study nights, lecture days, casual meetups, museum visits

Product features
- Made in Nicaragua using ethically grown US cotton; OEKO-TEX® STANDARD 100 certified dyes.
- Medium-heavy 50/50 cotton-poly blend (8.0 oz/yd²) for warmth with breathable comfort.
- Tubular knit (no side seams) and ribbed collar for shape retention and reduced fabric waste.
- DTF inner neck labels and wrist prints with DTG for main prints; double-needle stitched seams for durability.

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

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 collar with seam

Ribbed knit makes the collar highly elastic and helps retain its shape

Embroidery

Embroidery

Embroidery decoration method available on either left chest, center chest, or large center chest, as well as right + left wrists

Age restrictions

Age restrictions

For adults

Other compliance information

Other compliance information

Meets the flammability, lead, cadmium, bisphenols and phthalates level requirements.

Country of origin

Country of origin

Made in Nicaragua

DTF inner neck labels

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.

Drycleaning IroningWashingBleachingDrying

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 conditions

Charlotte 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.

© 2025 Eco Essentials

Designs © 2026 Charlotte Place Design

and Christopher Fayers