Fantastic aid for zeroing - tried everything to get a decent target to aim at - these patches show up brilliantly. No more heating up nails/ screws or tin foil with insulation tape - cannot believe how good they are - a must for zeroing a thermal scope!
Thermal target patches are completely useless, worse than using tin foil your better off using hand warmers much more effective
The product is outstanding and would definitely use for thermal zeroing going forward, however the postage charge for a strip of patches that would fit in a small envelope was outrageous
Not quite as bright through the thermal as I thought they might be
Perfect at 50 yards, outperformed by aluminium tape at longer range