Development is a constant process of change, new technologies in sewing.
USEFUL LINKS:
leather with free doubling to the desired thickness, leather cardboard
https://om-pelle.com
promo code "SWAN" 10% discount
Reinforcement materials:
Thermo-calico
https://vk.com/market-192281212_8984101
TALYN
https://vk.com/market-192281212_8984067
Patterns + video
https://vk.com/market-192281212_8791424