Answer (1 of 2): i don’t recommend using duct tape. it doesn’t have the elasticity you need to keep your chest flattened and secure (at least in my experience) but in general it just isn’t safe. the two that i’m aware of and have used are KT tape or Trans tape. i prefer KT tape and at first i did
2 Rolls of TransGenx Tape Each Roll is Approximately 2 Inches Wide By 16 Feet Long Medical Grade Chest Binding Tape. No harsh chemicals. Much safer to
Universal Body Labs TransGenX Tape - Best Trans FTM Binder for Chest Binding (2 Pack)
It's Binding or Suicide': Transgender and Non-Binary Readers Share Their Experiences With Chest Binders - The New York Times
Is the KT tape good for binding chest (FTM trans)? - Quora
What binds better, trans tapes or binders? - Quora
It's Binding or Suicide': Transgender and Non-Binary Readers Share Their Experiences With Chest Binders - The New York Times
TransGenX Tape - Best Trans FTM Binder for Chest Binding While Transitioning : Industrial & Scientific
What can I use for a binder? I have an FTM friend whom I'm trying to help. - Quora
5 TransTape Binding Tips From Kai (Owner)
1st time binding w/ KT! Summer is about to be so much better :) : r/ftm
Here's What Parents Need To Know About Chest Binding
Chest or breast binding: Tips, side effects, safety, and more
Trans Tape Tutorial
Is the KT tape good for binding chest (FTM trans)? - Quora
What is Kinesio Tape, and how does it work? - Quora
How long can you wear trans tape? Are there any ways I can use less tape while also keeping a flat chest? - Quora