Premium Sisyphus Gym Legendary Perseverance Training Specializing In Boulder T Shirts Unisex T-shirt, Sweatshirt, Hoodie, Long Sleeve Tee
Exclusive Design – Premium Print on Gildan® Cotton
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.
📸 Seeing a T-Shirt? That’s just the preview! This exact design is also available on Long Sleeve, Sweatshirt & Hoodie. Just choose your style – we print and ship it your way.
Why This Stands Out
- 🎨 Colors That Stay – Advanced DTG ink bonds with every fiber. Wash it 50 times – still looks fresh.
- 🧵 Fabric That Delivers – Gildan® Ultra Cotton & Heavy Blend. Soft, durable, certified low-impact dyes.
- 👕 All-Day Comfort – Classic fit with taped seams and a tear-away label. Zero itch, zero irritation.
- 🇺🇸 Good Cotton, Good Vibes – US Cotton Trust Protocol member. Sustainable, premium, American-grown.
Material Details
- Tees & Long Sleeves: 5.3–6 oz, 100% US cotton – light enough for summer, layerable for fall.
- Fleece (Sweatshirt & Hoodie): 8 oz cotton/poly blend – warm, smooth surface, anti-pill finish.
- Fabric note – Sport Grey (90/10 cotton/poly) has a slight poly blend for that classic heather finish.
Choose Your Style
Choose your favorite color and find the perfect fit:


- Find your color in the chart above.
- Match your measurements to the size guide.
- Add to cart and check out securely.
Shipping & Delivery
- ✅ Production: 1–3 business days.
- 📦 USA Standard: 3–7 business days.
- ⚡ USA Rush: 3–5 business days.
- 🌍 International: 1–2 weeks.
Each piece is printed on demand after you order. Double-check your size before checkout. Size-related returns aren’t available, but reach out if you need any help – we’ve got you.
🛒 Check out CoreVibeTees.com for the latest drops. Premium apparel, always.