Thermoflex Vs Siser

In today’s blog, I want to discuss what you need to know about these two trusted products in the garment decorating industry.

They are both highly durable and convenient to work with.

I always compare Thermoflex and Siser to Pepsi and Coke!

They are very identical, yet they have their unique differences.

Siser offers a semi-matte finish that comes in a limited color range.

On the other hand, Thermoflex offers a true matte finish and it comes in a wide range of colors.

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Siser EasyWeed

If you’re looking for the best vinyl for heat transfer, then you should consider going for the Siser.

It is a great all-round vinyl that can be used in all types of fabrics and is a popular choice amongst t-shirt crafters and makers alike.

More so, applying it requires lower pressure and temperature, can be peeled when hot or cold and is highly durable in the washing machine.

Siser is the simplest HTV to cut and weed. It comes with the same vinyl cutter settings for some of the popular machines such as Graphtec, Brother, Silhouette, Cricut, and others.

So, you can be sure that no guesswork is involved.

Additionally, its pressure-sensitive backing helps to make a breeze because the cut designs will stay put.

It is easy to apply since it comes with well-outlined guidelines to follow and the pressure and the temperature required to transfer is lower as compared to other iron-on types of vinyl.

For decades, Siser has been widely known to produce high-quality heat transfer vinyl.


  • It offers well-outlined and clear instructions.
  • It is suitable for t-shirts and other fabrics.
  • It is highly durable – lasts through several washes.
  • It comes in a range of patterns and textures.
  • Since it comes from a renowned and reliable manufacturer of heat transfer vinyl, its quality is guaranteed.


  • It is not available in wide rolls.
  • It is more costly as compared to cheaper brands.


The major benefits of Thermoflex heat transfer vinyl are that it produces a soft, matte finish and comes in a wide variety of colors to choose from.

More so, it is a polyurethane-based material and it is available in wider materials.

It is also highly durable and will most probably outlast the garment’s life if properly applied.

It can be used together with a laser cutter and it has a soft, highly flexible hand that moves with the garment.

However, I would recommend that before you press your design, you should wash your garments and dry them.

The reason for this is that it will facilitate the adhesive to penetrate the garment better.


  • This is the best price for a heat transfer vinyl.
  • It is simple and reliable to transfer vinyl onto cotton t-shirts.
  • Elastic and stretchy which means that it will not peel or crack.
  • The paper beautifully and quickly absorbs the ink for smudge-free designs.


  • User instructions can be challenging to understand.
  • Backing paper tends to be hard to peel off.
Bestseller No. 1
ThermoFlex Plus 15" Roll, Iron on Heat Transfer Vinyl, HTV (White, 5 Feet)
  • ThermoFlex 15" roll of Heat Transfer Vinyl
  • Durable Polyurethane based material.
  • May be applied in layers for multi-colored designs.
  • Has a soft hand and strong grip and if applied properly will outlast the life of the garment.
Bestseller No. 3
Siser EasyWeed Heat Transfer Vinyl 11.8" x 2ft Roll (Latte) Compatible with Siser Romeo/Juliet & Other Professional or Craft Cutters - Layerable - CPSIA Certified
  • DIY APPAREL - Personalize t-shirts, hoodies, pants, hats, bags, and so much more! EasyWeed allows you to customize a wide variety of fabrics including cotton, polyester, blends, leather, and more!
  • EASYWEED ADVANTAGE - EasyWeed is the leading HTV for a reason! Thanks to a sticky carrier backing, weeding even the smallest details is a breeze. EasyWeed also applies with a 1-second tack for layering and can be peeled hot— no cooldown required!
  • CRAFT SIZED - This roll of EasyWeed measures in at 11.8" wide x 3ft long— perfectly sized for compatibility with virtually any professional or craft cutter on the market, including the Siser Romeo and Juliet High-Definition cutters!
  • PREMIUM FEEL & QUALITY - EasyWeed is just 90 microns thin which allows designs to feel incredibly lightweight when compared to other, thicker vinyls! Despite it's thinness, EasyWeed is also extremely durable, lasting wash after wash without fading, cracking, or peeling for long-lasting designs.
  • EASY APPLICATION - EasyWeed was designed to make the heat application process as painless as possible. Apply with a heat press set to 305°F with medium pressure for 15 seconds. You can also apply EasyWeed with a home iron set to "Cotton" or "High"!
Bestseller No. 4
ThermoFlex Stretch White 15" Roll of Iron on Heat Transfer Vinyl, HTV (5 Feet)
  • White ThermoFlex Stretch 15" roll of Heat Transfer Vinyl, HTV
  • Soft-Hand Matte Finish
  • High Stretch and Rebound
  • Great for Stretchy Clothing!
Bestseller No. 5
Siser EasyWeed Adhesive 11.8" x 1 Yard
  • EasyWeed Adhesive 11.8" - Heat Transfer Vinyl 4U Authorized Siser Distributor
  • EasyWeed Adhesive Applies to 100% cotton Poly/cotton blends 100% polyester
  • Cut in reverse Weed excess material Preheat garment for 2-3 seconds
  • Apply design at 275°F/135°C Use medium pressure for 5-10 seconds Peel carrier hot
  • Specifications: PET Composition  Pressure sensitive backing  Semi-gloss finish  75 Microns/2.95 Mils  45°/60° blade  Should be layered

Which is Better, Thermoflex or Siser?

Both of these vinyls are convenient and among the best in the garment decoration industry.

However, if I was to pick one, I’d go for Siser EasyWeed as the best.

It is highly durable, and does not crack, wrinkle, or peel off your garment. Choose your favorite and customize your clothing!

Last update on 2023-10-01 / Affiliate links / Images from Amazon Product Advertising API