Full Tilt Soul Sister 100 Ski Boot | Review

A ski boot so comfortable you won't want to take it off, have a look at the Soul Sister 100

Why we chose the Full Tilt Soul Sister 100: versatile, comfortable, progressive flex

Flex: 100
Last: 99 mm
BSL: 293 mm (25.0)
Binding Compatibility: GripWalk
Weight (per boot): 1,700g
Price: £350


Maggie Voisin, Mathilde Gremaud, Caroline Claire, Taylor Lundquist… the list of athletes repping Full Tilt’s Soul Sister 100 is stacked. Their popularity comes as no surprise given Full Tilt’s roots and subsequent domination in freestyle skiing.

Launched back in 2006, Full Tilt brought about the revival of skiing’s three-piece boot based on the ethos that ‘comfort is performance’. Fifteen years later, a quick scan of skier’s feet in the park pays testament to their strategy’s success.

Full Tilt Soul Sister 100 Build

The Soul Sister 100 is constructed from a shell, spine, and tongue piece. Full Tilt swear by this three-piece construction because of the benefits afforded to the boot’s flex.

Operated by an oversized cuff pivot and enhanced by the ribbed tongue, the boot’s shell flexes infinitely with your ankle joints to accommodate your lower leg’s full range of movement. In doing so, Full Tilt eliminate the shell distortion and your leg’s discomfort provoked when traditional boots are confronted with high impact. In other words, say goodbye to shin bang and hello to afterbang.

“Say goodbye to shin bang and hello to afterbang”

The beauty of Full Tilts is their adjustable flex. A 100 flex tongue instils the Soul Sister 100 with great all-mountain versatility. But if you’re anticipating thumping landing after landing in the park, switch the tongue for a 90, or alternatively, insert a 120 flex tongue if you want to shred groomers hard and fast.

The Soul Sister 100’s shell is lined with a shock absorbent board to pad out your landings. Watch the one and only Mathilde Gremaud stomp the world’s first female switch double cork 1440 in her Soul Sister 100s, and you’ll see just how much your heels can handle in these boots.

The Soul Sister 100s also come with removable Grip Walk plates to preserve the boots’ life (and of course, soul).

Full Tilt Soul Sister 100 Fit

The Soul Sister 100’s shell has a wider and lower boot cuff specifically designed to fit women. It also features a roomier toe box than Full Tilt’s original shells (this will come as a relief to those who can’t usually feel their toes in restrictive boots).

“Thanks to a memory foam Pro Wrap liner, the Soul Sister 100 offers a warm, cushioned, and personalised fit”

A J-bar in the heel pocket anchors your heels to the back of the boot, which you’ll be thankful for on high-impact park days to prevent heel slip and dreaded toe-bang. Full Tilt’s widetrack buckles, the cable looking devices snaking across the boot, evenly distribute pressure on the front of your foot to eliminate buckle burn and pressure points.

Thanks to a memory foam Pro Wrap liner, the Soul Sister 100 offers a warm, cushioned, and personalised fit, and both the liner and shell are heat mouldable. Plus, the boot’s tongue piece opens at a 90-degree angle, which makes slipping your feet into the Soul Sister 100 a walk in the park.

Who Is The Full Tilt Soul Sister 100 For?

Thanks to its progressive flex, memory foam liner, and fully retractable tongue, the Soul Sister 100 is as close to a slipper as ski boots get. For skiers seeking ultimate comfort and practicality, this boot is a winner.

As a result, the Soul Sister 100 is an equally great option for intermediate skiers fed up with waiting until the end of their holiday for comfortable boots, as it is for professional freestyle athletes.

“The Soul Sister 100 is as close to a slipper as ski boots get”

Whilst a 3-piece construction and 100 flex doesn’t offer the precision or rigidity required for top-end piste performance, don’t limit the Soul Sister 100 to the park.

The range of movement and absorption that Full Tilt’s accommodate allows the Soul Sister 100 to shine on pretty much anything involving a bumpier ride. Mogul skiers like Perrine Laffont know they’re a touch in the bumps and, as Maggie Voisin recently demonstrated in Swiftcurrent, they can withstand surprisingly significant impact in the backcountry.

Follow Taylor Lundquist’s example and pair the Soul Sister 100’s with the LINE Honey Bee 92 for a set up that serves skiers at all levels, from those just beginning to explore the whole mountain all the way to freestyle pros. Either way, you’ll be excited to get into the Soul Sister 100’s and you’ll never want to take them off.

What Is The Full Tilt Soul Sister 100 Good At?

Comfort: 8/10

Versatility: 7/10

Progressive Flex: 10/10

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