"Time to Sine" Tee | Where Hand Gestures Meet Wave Functions

Ah, the classic friendly wave - but make it trigonometric! Our design features a hand that's not just saying hello, it's plotting a perfect sine wave through space-time. Because sometimes you need to greet someone with exactly one cycle per oscillation of enthusiasm.

It's the perfect visualization of what happens when your math teacher says "wave hello to sine functions" and you take it literally. The hand traces that beautiful mathematical curve that shows up everywhere from sound waves to quantum mechanics to that one person frantically trying to get their friend's attention across the cafeteria.

Care Instructions:

Machine wash cold. Tumble dry low. Avoid discontinuous functions in the wash cycle.
(Warning: May cause involuntary hand-waving when discussing periodic functions. Your friends will either be impressed or concerned - there is no middle ground.) Co

Features:

Cotton that fluctuates smoother than your graphing calculator's displayDesign that makes wave functions more approachable than your calculus professor
Durability that doesn't decay exponentially
Comfort that oscillates between "wow" and "amazing"

Perfect for:
People who wave with mathematical precision
Anyone who's ever explained sine waves using interpretive hand gestures
Math teachers tired of drawing wobbly curves on the whiteboard
Students who finally understood trig when someone said "just wave your hand"

Available in sizes XS-3XL (amplitude may vary)

• 100% cotton
• Sport Grey is 90% cotton, 10% polyester
• Ash Grey is 99% cotton, 1% polyester
• Heather colors are 50% cotton, 50% polyester
• Fabric weight: 5.0–5.3 oz/yd² (170-180 g/m²)
• Open-end yarn
• Tubular fabric
• Taped neck and shoulders
• Double seam at sleeves and bottom hem
• Blank product sourced from Honduras, Nicaragua, Haiti, Dominican Republic, Bangladesh, Mexico

• Traceability:
- Knitting—Honduras, the Dominican Republic
- Dyeing—Honduras, the Dominican Republic
- Manufacturing—Nicaragua, Honduras, Haiti, El Salvador, or the Dominican Republic
• Contains 0% recycled polyester
• Contains 0% dangerous substances

Age restrictions: For adults
EU Warranty: 2 years
Other compliance information: Meets the flammability, lead, cadmium, phthalates and formaldehyde level requirements.

In compliance with the General Product Safety Regulation (GPSR), Technium Foundry LLC and SINDEN VENTURES LIMITED ensure that all consumer products offered are safe and meet EU standards. For any product safety related inquiries or concerns, please contact our EU representative at gpsr@sindenventures.com. You can also write to us at 2201 Gibson Rd., Jacksonville, FL 32207, USA or Markou Evgenikou 11, Mesa Geitonia, 4002, Limassol, Cyprus.