Sumifun: The End of Patchwork Pain Relief
Stop piecing together small patches like a broken puzzle! Our XL 4.72"x7.87" design is the ultimate solution for:
Science of Big-Area Relief
✅ Unified Drug Delivery: Single-patch application ensures consistent 4% lidocaine saturation across large pain zones (e.g., 10x15cm lumbar area), avoiding "hot/cold spots" from overlapping patches.
✅ Industrial-Strength Adhesion: Cross-linked polymer adhesive tested under 50kg/cm² pressure – stays put during squats, truck loading, or 12-hour nursing shifts.
Who Demands XL Coverage
✦ Warehouse Workers: Covers entire lower back after lifting heavy boxes all day.
✦ Athletes: Full gluteal coverage for squat-induced soreness.
Warning: External use only. Consult doctor for pain lasting >7 days.