ASICS FlyteFoam Propel vs Skechers Goga Max: Midsole vs Insole

Where the cushioning sits: midsole versus insole

Two brands soften the step in different places. ASICS builds FlyteFoam Propel into the midsole, the structural foam layer between the outsole and your foot. Skechers places Goga Max in the insole, the removable footbed that your foot touches first. Both aim to soften impact, but they work at different points in the shoes construction.

This split matters at the point of purchase. A midsole is part of the shoe's foundation: it absorbs impact, holds your foot in a natural position, and resists compression for the life of the shoe. An insole is a cushion you can lift out, swap, or replace. When one brand sells cushioning as a built-in layer and the other as a replaceable footbed, the difference is not just marketing; it changes how the shoe wears, how it fits, and how long the comfort lasts.

ASICS FlyteFoam Propel: a foam built into the shoe

FlyteFoam Propel is ASICS midsole foam, formulated to add bounce and energy return to the step. The foam runs the length of the shoe under the heel and forefoot, so it cushions every phase of a stride, not just the moment of first contact. That makes it a natural fit for running shoes and walking shoes.

Because it is a midsole, FlyteFoam Propel also handles structural duties. It controls how deeply your foot sinks, supports the foot's alignment, and works with the heel counter and outsole to keep the step stable. For runners and walkers who log miles, this is the cushioning that carries you, not just the cushioning you notice on the first step. To see how midsole foam compares with other materials, see midsole materials.

Skechers Goga Max: a plush insole under your foot

Goga Max is Skechers high-softness insole foam. It sits directly under your foot, on top of the midsole, and it is the first cushioning layer you hit when you slip the shoe on. The foam is designed to feel plush and to conform to the shape of your foot, which is why Goga Max shoes are often described as having a pillow-like step-in feel.

Because it is an insole, Goga Max is removable. You can lift it out to clean, dry, or replace it, and you can swap in your own insole or orthotic if the shoe's arch does not match your foot. That flexibility makes the insole a draw for people who prefer to control their own cushioning. If that sounds useful, look at how removable insoles change the fit and feel, and browse the current Skechers sneakers.

Support versus softness: what each layer really does

Support and softness are not the same thing, and these two technologies give you different amounts of each. FlyteFoam Propel contributes support because it is part of the shoe's structure. It provides a stable platform, helps guide the foot through a natural gait, and prevents excessive sinking. Goga Max contributes softness: it cushions the footbed, so the first sensation is plush, but it does not control alignment on its own.

OrthoInfo, the AAOS patient education site, covers foot and ankle conditions such as progressive collapsing foot deformity (flatfoot) and hallux rigidus, where a shoe that fits well and supports the foot is part of the comfort equation. A soft insole over a stable midsole can give you both plushness and support. A very soft midsole alone can feel nice at first but may allow the foot to roll or sink more than is comfortable for some wearers. For more on where arch help comes from, see sneaker arch support.

Step-in feel, orthotics, and fit

If you plan to use your own orthotic, the insole is the deciding factor. A removable insole like Goga Max makes that easy: take it out, drop in your own, and the shoe keeps its basic structure. Look for shoes where the insole lifts out cleanly, which is a sign the shoe was designed with replacement in mind. This topic is covered in more depth in sneaker insoles and orthotic-ready shoes.

Remember that adding a thicker insole changes the fit. Your foot sits higher, and the toe box can feel shorter or the heel less secure. It is a good idea to try shoes with the insole you intend to wear, and to check that you still have a little room at the end of the toe. See how sneakers should fit for the full checklist.

A soft insole can also mask the feel of the shoe underneath. If you want to judge the midsole, wear the shoe with its original insole first, then compare. You will feel the difference between a plush footbed and a responsive midsole.

Which approach fits your day

Choose a midsole-forward shoe when you rely on cushioning for miles: running, brisk walking, or long days on your feet. FlyteFoam Propel's structural foam gives you consistent support from heel to toe, and it holds up better over time as a foundation. The best ASICS sneakers and walking shoes reward that choice.

Choose an insole-forward shoe when your priority is the comfortable feel at the very start of a step, especially for casual wear or light errands. Goga Max gives immediate plushness, and because the insole is replaceable you can refresh the feel without buying a new shoe. Many everyday sneakers and slip-on sneakers use this approach, and NIOSH, the CDC's workplace safety agency, notes that reducing strain for people on their feet all day often comes down to how well the foot and lower body are supported.

For many people the answer is both: a stable midsole with a soft, removable insole on top. That combination gives you support where it counts and softness where you feel it.

What to pick for your use

Questions

Which is better for support: a midsole or an insole?

The midsole. It is the shoe's structural layer and controls alignment and impact. An insole adds comfort on top but does not provide the same structural support.

Can I put a Goga Max style insole in a shoe with FlyteFoam Propel?

Yes, if the insole is removable and the shoe fits. A thicker insole may raise your foot and change the fit, so test the combination before you commit.

Does a soft insole weaken the support of a firm midsole?

No. A soft insole sits on top of the midsole and gives comfort, while the midsole still does the structural work. A very thick insole can alter fit and stability, so test it.

Which lasts longer, the midsole foam or the insole?

The midsole, because it is part of the shoe. Insoles compress with wear and are typically replaced sooner. If longevity is your priority, the midsole quality matters most.

Are these cushions for running only?

No. FlyteFoam Propel suits running and walking, and Goga Max works for casual daily wear. Pick based on the activities you do and how much support you need.