Broadcast the powerful magnetism of your heart with the Human Toroidal Field Tee, only from ShirtCastle™. Looks great alone or under a blazer. Description The Human Toroidal Field Tee is a premium-quality, 100% heavyweight cotton T-shirt printed direct-to-garment with a vintage-style drawing of a human figure at the center of the toroidal magnetic field that is generated by the human heart. Materials Fabric Weight: 6.5 oz/yd² (220 GSM) Fiber Content: 100% Combed Ring-Spun Cotton Yarn Count: 20 singles Construction Fit: Relaxed, structured fit Articulation: Side-seamed construction, ribbed collar Stitching: Single-needle edgestitch ⅞″ Branding: Signature neckprint Printing Type: Direct-to-garment Ink: Water-based, nontoxic, eco-friendly and vegan Origin & Impact Origin: Garment woven and sewn in Bangladesh; printed and shipped in the USA Ethics: 100% WRAP-certified production facilities .cert-badge { display: inline-block; border: 1px solid #000; padding: 8px 16px; margin: 0 8px 8px 0; color: #000; background-color: #fff; font-size: 11px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; text-decoration: none; transition: all 0.2s ease-in-out; white-space: nowrap; cursor: pointer; } .cert-badge:hover { background-color: #000; color: #fff; border-color: #000; } .cert-arrow { font-size: 1.1em; margin-left: 4px; vertical-align: text-top; } WRAP CERTIFIED ↗ Size Guide Size Label Length Width S 29 ½ 18 M 30 ½ 20 L 31 ½ 22 XL 32 ½ 24 2XL 33 ½ 26 3XL 34 ½ 28 4XL 35 ½ 30 Care Guide: Machine wash cold, inside-out, gentle cycle with mild detergent and similar colors. Use non-chlorine bleach only when necessary. No fabric softeners. Tumble dry low or hang-dry. Cool iron inside-out if necessary; do not iron decoration. Do not dry clean. Thank you Your ShirtCastle™ Human Toroidal Field Tee is made especially for you when you place an order, so it takes some extra time to produce and deliver it. Making shirts on demand instead of in bulk helps reduce overproduction — so thank you for your patience and thoughtful purchasing decisions. Why No Polyester Your Human Toroidal Field Tee is made from 100% cotton and not a poly blend. Here's why that matters to your health. The Human Toroidal Field The human toroidal field is a dynamic, three-dimensional electromagnetic field generated primarily by the human heart. In the emerging fields of neurocardiology and biophysics, the heart is recognized not just as a mechanical pump, but as the body’s most powerful generator of rhythmic electromagnetic energy. The electrical component of the heart is roughly 60 times greater than that of the brain, while its magnetic field is up to 5,000 times stronger. This magnetic field can be measured several feet away using sensitive magnetometers. The integrity of this field is influenced by emotions, observable through Heart Rate Variability. Positive emotions like compassion and appreciation create a smooth, highly ordered HRV rhythm known as psychophysiological coherence. Meanwhile, research demonstrates that this toroidal field enables interpersonal synchronization, where the brainwaves of one individual can naturally entrain to the heartbeat of another nearby. Dive deeper on the human toroidal field in our blog post here.