Here are the patch adhesion instructions should you prefer to complete:

Instructions:
Heat N' Seal™ Instructions for Use:
To achieve a durable adhesion, the base material must be heated to remove excess moisture in heat press - prior to the application of Heat N Seal
J (I)-Type . 340°F medium pressure about 10-15 Sec. with a Heat Press  

To achieve a durable adhesion, the base material must be ironed to remove excess moisture from fabric - prior to the application of Heat N Seal if g household Iron

Heat from underside of fabric (inside out) once ironed on front of fabric for 10-15 seconds if using iron with firm pressure, no side to side movements **(Iron setting to max your fabric can stand)**

Material: 100% copolyamid · suitable for industrial garments,   washable up to 205° F · fast to dry cleaning  can only be applied with a heat press · strength: 73 µ, 80 g/m2 
Suitable for industrial garments, washable up to 205° F
All values stated are averages and have to be adapted to the thickness and the heat carrying capacity of the specific cloth. You may also vary temperatures and period. A rise in temperature will result in a shorter period required.

Step  2. Post-Production Washing Tests
Full adhesiveness is reached after 48 hours, complete wash tests after this period.

Wash with like colors
Cold setting wash, dryer on timed dry low setting up tp 30 min. per item as per item label of clothing instructions.
Do not use bleach or fabric softener on item being washed.