.tsf-pd { max-width: 900px; margin: 0 auto; padding: 10px 0 20px; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif; color: #222222; line-height: 1.7; font-size: 14px !important; } .tsf-pd-tabs { display: flex; justify-content: center; gap: 8px; margin-bottom: 28px; flex-wrap: wrap; } .tsf-pd-tab { padding: 12px 30px; background: #f2f2f2; border: 2px solid transparent; border-radius: 30px; color: #222222; font-family: inherit; font-size: 14px !important; font-weight: 600; cursor: pointer; transition: all 0.25s ease; letter-spacing: 0.02em; } .tsf-pd-tab:hover { background: #d2beae; color: #ffffff; } .tsf-pd-tab.tsf-pd-on { background: #a97142; color: #ffffff; border-color: #a97142; } .tsf-pd-sec { display: none; } .tsf-pd-sec.tsf-pd-on { display: block; } .tsf-pd-sec h3 { font-size: 15px !important; font-weight: 600; color: #222222; margin: 24px 0 10px; line-height: 1.5; } .tsf-pd-sec h3:first-child { margin-top: 0; } .tsf-pd-sec p { font-size: 14px !important; color: #222222; margin-bottom: 10px; line-height: 1.7; } .tsf-pd-sec p:last-child { margin-bottom: 0; } .tsf-pd-sec strong { color: #222222; } .tsf-pd-sec a { color: #a97142 !important; text-decoration: none !important; border-bottom: 1px solid #d2beae; transition: border-color 0.2s; } .tsf-pd-sec a:hover { border-bottom-color: #a97142; } .tsf-pd-sec ul { list-style: none; margin: 10px 0; padding: 0; } .tsf-pd-sec ul li { padding: 4px 0 4px 16px; position: relative; font-size: 14px !important; color: #222222; } .tsf-pd-sec ul li::before { content: ''; position: absolute; left: 0; top: 12px; width: 5px; height: 5px; background: #d2beae; border-radius: 50%; } .tsf-pd-note { background: #f2f2f2; border-left: 3px solid #d2beae; padding: 12px 16px; margin: 14px 0; font-size: 14px !important; border-radius: 0 8px 8px 0; color: #222222; } .tsf-pd-note strong { color: #222222; } .tsf-pd-divider { height: 1px; background: #e8e8e8; margin: 20px 0; border: none; } /* Compat grid */ .tsf-compat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 16px 0; } .tsf-compat-item { display: flex; align-items: center; gap: 10px; background: #f2f2f2; border-radius: 10px; padding: 14px 16px; } .tsf-compat-icon { flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; } .tsf-compat-icon.yes { background: #e6f4ea; color: #2e7d32; } .tsf-compat-icon.no { background: #fdecea; color: #c62828; } .tsf-compat-name { font-size: 13px !important; font-weight: 600; color: #222; } .tsf-compat-detail { font-size: 12px !important; color: #888; } /* Size boxes */ .tsf-sizes { display: flex; gap: 12px; margin: 16px 0; } .tsf-size-box { flex: 1; background: #f2f2f2; border-radius: 12px; padding: 20px; text-align: center; } .tsf-size-label { font-size: 18px !important; font-weight: 600; color: #a97142; margin-bottom: 6px; } .tsf-size-range { font-size: 14px !important; color: #222222; } /* Shipping cards */ .tsf-shipping-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 16px 0; } .tsf-shipping-card { background: #f2f2f2; border-radius: 10px; padding: 16px; } .tsf-shipping-card h4 { font-size: 14px !important; font-weight: 600; margin: 0 0 6px; color: #222; } .tsf-shipping-card p { font-size: 13px !important; color: #555; margin: 0; line-height: 1.6; } .tsf-shipping-free { grid-column: 1 / -1; background: #e6f4ea; text-align: center; border-radius: 10px; padding: 14px; } .tsf-shipping-free p { color: #2e7d32 !important; font-weight: 600; font-size: 14px !important; margin: 0; } /* Timeline */ .tsf-story-step { display: flex; gap: 16px; margin-bottom: 18px; } .tsf-story-dot { flex-shrink: 0; width: 10px; height: 10px; background: #d2beae; border-radius: 50%; margin-top: 6px; } .tsf-story-step:last-child .tsf-story-dot { background: #a97142; } .tsf-story-text { font-size: 14px !important; color: #222222; line-height: 1.7; } .tsf-story-text strong { color: #222222; } .tsf-story-date { font-size: 12px !important; color: #a3a3a3; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 2px; } @media (max-width: 600px) { .tsf-pd-tab { font-size: 12px !important; padding: 10px 16px; } .tsf-sizes { flex-direction: column; } .tsf-compat-grid { grid-template-columns: 1fr; } .tsf-shipping-grid { grid-template-columns: 1fr; } } Product Compatibility Size Guide Shipping Our Story Quick note: Orders placed between May 4th and May 9th will be shipped on May 10th.The Aluminum Case A CNC-machined aluminum piece, sand-blasted and anodized for enhanced durability and protection. Available in 3 anodized finishes: Gold, Black and Silver. Note: The Gold finish is a gold-colored anodized coating, not real gold. What's Included CNC Aluminum Adapter — Precisely engineered to attach securely to the original Amazfit Helio Strap sensor. CNC Aluminum Buckle — Matching the color of the adapter for a cohesive, premium look. Wristband or Arm Band sold separately — required to wear the case. Available individually or as a bundle. Compatibility The adapter is compatible with both the Amazfit Helio Strap and the Amazfit Helio Ring Core. ✓ Amazfit Helio Strap Designed specifically for this device ✓ Amazfit Helio Ring Core Full sensor compatibility ✗ WHOOP Not compatible ✗ Official Amazfit wristband Uses TheStrapForge bands only Wristband Size Guide The wristband comes in two sizes. This is particularly important if you have a very small or very large wrist to ensure a secure fit. How to measure correctly: For the best Heart Rate sensor accuracy, the band should be worn approximately 2cm (1 inch) above your wrist bone. Please measure your wrist circumference at that specific spot. S 135mm – 185mm L 185mm – 231mm If your wrist measures exactly 185mm, both sizes will work. We recommend S for a snugger fit or L if you prefer a looser feel. Shipping Free shipping on orders over €60 Worldwide — €6 flat rate All orders ship with tracking included. Delivery times USA: 8–12 business daysEurope: 7–10 business daysRest of world: 8–12 business days Built in Public, Driven by Community The Strap Forge started with a simple observation: the Amazfit Helio Strap is a great device, but its design is not exactly fashion-friendly. We set out to change that. See where it all started: Read the original Reddit post that launched the project. Feel free to reach out on Reddit (u/Tomtomtxz2) if you have any questions — I always reply. October 2025 The idea is born. First 3D-printed PLA prototype shared on Reddit. The community responds instantly — there is real demand for a premium Helio Strap. November 2025 The metal quest begins. Lost wax casting fails on tolerances. Electroplating peels off with sweat. CNC aluminum emerges as the only viable path for a truly premium product. December 2025 200+ survey responses. The community speaks. Production is greenlit. The CNC aluminum adapter goes live with Gold, Silver and Black finishes. January 2026 First bulk order ships. Every single case is checked by hand. CNC buckles replace the standard ones because the quality was not good enough. No compromises. March 2026 Major operational shift. Warehouse model goes live. Shipping drops to 6 EUR worldwide with tracking on every order. Arm band version and Sandy White color on the way. This product would not exist without the Reddit community. Every iteration, every improvement came from real feedback. Want the full story? Read our complete development log: Build Log Follow the journey on YouTube and Reddit.
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