{"product_id":"sigma-21m","title":"Sigma = 21M","description":"A heavyweight, garment-dyed tee that feels lived-in from the first wear. This relaxed-fit shirt sports a clean, math-inspired front graphic in warm orange on a soft natural ground — subtle, clever, and quietly confident. The thick ring-spun cotton holds its shape while the garment-dye process gives each piece a slightly muted, vintage depth. It sits comfortably for long days of teaching, grading, or thinking through problems at the coffee shop. Sizes run S–4XL and the tubular, seam-free body keeps the silhouette smooth and simple. Wear it to lectures, study sessions, or casual meetups where smart humor and low-key style matter.\u003cbr\u003e\u003cbr\u003eProduct features\u003cbr\u003e- 100% ring-spun US cotton — pre-shrunk and heavyweight for durability\u003cbr\u003e- Garment-dyed after construction for a soft, vintage look and hand\u003cbr\u003e- Relaxed fit with tubular, no-side-seam construction for a clean silhouette\u003cbr\u003e- Double-needle stitched seams and sewn-in label for long-lasting wear\u003cbr\u003e- Available S–4XL with 58 color options; consult Comfort Colors 1717 size chart\u003cbr\u003e\u003cbr\u003eCare instructions\u003cbr\u003e- Machine wash: cold (max 30C or 90F)\u003cbr\u003e- Do not bleach\u003cbr\u003e- Tumble dry: low heat\u003cbr\u003e- Iron, steam or dry: low heat\u003cbr\u003e- Do not dryclean\u003cbr\u003e","brand":"Printify","offers":[{"title":"Black \/ S","offer_id":42407942520894,"sku":"10558705813969163008","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ S","offer_id":42407942553662,"sku":"17418495248923723762","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Ivory \/ S","offer_id":42407942586430,"sku":"10151258318848388611","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Pepper \/ S","offer_id":42407942619198,"sku":"32884289375874791776","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ M","offer_id":42407942651966,"sku":"71516756771391198335","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ M","offer_id":42407942684734,"sku":"81304806813093493710","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Ivory \/ M","offer_id":42407942717502,"sku":"13374196320874751018","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Pepper \/ M","offer_id":42407942750270,"sku":"16237980515353246165","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ L","offer_id":42407942783038,"sku":"17927620643015453877","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ L","offer_id":42407942815806,"sku":"13757119103918822093","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Ivory \/ L","offer_id":42407942848574,"sku":"17558691695600795102","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Pepper \/ L","offer_id":42407942881342,"sku":"24636771854063248567","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ XL","offer_id":42407942914110,"sku":"14937370012300830797","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ XL","offer_id":42407942946878,"sku":"19784060860448330316","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Ivory \/ XL","offer_id":42407942979646,"sku":"28931593971963522347","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Pepper \/ XL","offer_id":42407943012414,"sku":"20423202963813461974","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ 2XL","offer_id":42407943045182,"sku":"26719730238331650681","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ 2XL","offer_id":42407943077950,"sku":"24369680888284307647","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Ivory \/ 2XL","offer_id":42407943110718,"sku":"75559976875307284982","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Pepper \/ 2XL","offer_id":42407943143486,"sku":"27409229938875147581","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ 3XL","offer_id":42407943176254,"sku":"22155287479268848186","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Ivory \/ 3XL","offer_id":42407943209022,"sku":"15237421438801219234","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Navy \/ 3XL","offer_id":42407943241790,"sku":"69830221533219711583","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Pepper \/ 3XL","offer_id":42407943274558,"sku":"60714296857043110294","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0600\/0331\/9870\/files\/Ivory_cfd7762e-731c-4a0a-899f-c8f581399ee8.png?v=1772330104","url":"https:\/\/satoshispaceclub.store\/products\/sigma-21m","provider":"Satoshi Space Club","version":"1.0","type":"link"}