Atomic REDSTER STI 90 LC Ski Boot 2025
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Shipping Information
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Ski Boot Sizing Chart*
| Men's Shoe Size | Mondopoint | Europe | U.K. | Women's |
|---|---|---|---|---|
| 8 (Child) | 14 | 25 | 7 | ----- |
| 9 (Child) | 15 | 26 | 8 | ----- |
| 10 (Child) | 16 | 27 | 9 | ----- |
| 11 (Child) | 16.5 | 28 | 10 | ----- |
| 12 (Child) | 17.5 | 29 | 11 | ----- |
| 13 (Child) | 18.5 | 30.5 | 12 | ----- |
| 13.5 (Child) | 19 | 31 | 13 | ----- |
| 1 | 19.5 | 32 | 13.5 | ----- |
| 2 | 20 | 33 | 1 | ----- |
| 3 | 20.5 | 34 | 2 | ----- |
| 4 | 21 | 35 | 3 | 5 |
| 4.5 | 21.5 | 36 | 3.5 | 5.5 |
| 5 | 22 | 36.5 | 4 | 6 |
| 5.5 | 22.5 | 37 | 4.5 | 6.5 |
| 6 | 23 | 38 | 5 | 7 |
| 6.5 | 23.5 | 38.5 | 5.5 | 7.5 |
| 7 | 24 | 39 | 6 | 8 |
| 7.5 | 24.5 | 40 | 6.5 | 8.5 |
| 8 | 25 | 40.5 | 7 | 9 |
| 8.5 | 25.5 | 41 | 7.5 | 9.5 |
| 9 | 26 | 42 | 8 | 10 |
| 9.5 | 26.5 | 42.5 | 8.5 | 10.5 |
| 10 | 27 | 43 | 9 | 11 |
| 10.5 | 27.5 | 44 | 9.5 | 11.5 |
| 11 | 28 | 44.5 | 10 | 12 |
| 11.5 | 28.5 | 45 | 10.5 | ----- |
| 12 | 29 | 45.5 | 11 | ----- |
| 12.5 | 29.5 | 46 | 11.5 | ----- |
| 13 | 30 | 47 | 12 | ----- |
| 13.5 | 30.5 | 47.5 | 12.5 | ----- |
| 14 | 31 | 48 | 13 | ----- |
| 14.5 | 31.5 | 48.5 | 13.5 | ----- |
| 15 | 32 | 49 | 14 | ----- |
| 15.5 | 32.5 | 50 | 14.5 | ----- |
| 16 | 33 | 51 | 15 | ----- |
*this chart is intended as a general size guide. Some boot models may require more specific sizing.
Description
Description
The Atomic Redster STI 90 LC is a feature-packed race boot designed specifically for lighter junior racers – with a lower cuff to fit shorter legs.
While the Atomic Redster STI 90 LC is for lighter junior racers, the only thing junior about this race boot is the cuff height, just a little bit lower for younger legs. Atomic’s World Cup liner tech make sure it’s got great feel and a precise connection between liner and boot shell. The Slim Race Shell makes it easier to flex than normal junior race boots. Power Control lets racers adjust both the forward lean and the precise stiffness of the boot – letting them lock in their preferred feel for tons of confidence on race day. Junior racers will feel like they’re in the big leagues with the Redster STI 90 LC.
Weight (g) / Boot (Size): 1,850 / 24-24.5
Gender: Unisex
Terrain: Race
Flex: Medium
Boot-binding compatibility: Alpine, Gripwalk, MNC, MN
True Size Mondopoint 22
On our women's models, we offer a true shell size in MP 22 plus an appropriate liner construction.
Power Control
Allows for forward lean adjustment and an extremely solid connection of the cuff to the shell.
Full PU Construction
Both cuff and shell are made from polyurethane (PU) plastic to deliver outstanding skiing performance.
Low Cuff - All Sizes
A 15mm lower cuff on all sizes within the size range.
Racing Sole (non-replaceable)
Solid plastic sole used in World Cup racing that delievers performance, stability, and precision.
Ski Boot Sizing
Ski Boot Sizing
Ski Boot Sizing Chart*
| Men's Shoe Size | Mondopoint | Europe | U.K. | Women's |
|---|---|---|---|---|
| 8 (Child) | 14 | 25 | 7 | ----- |
| 9 (Child) | 15 | 26 | 8 | ----- |
| 10 (Child) | 16 | 27 | 9 | ----- |
| 11 (Child) | 16.5 | 28 | 10 | ----- |
| 12 (Child) | 17.5 | 29 | 11 | ----- |
| 13 (Child) | 18.5 | 30.5 | 12 | ----- |
| 13.5 (Child) | 19 | 31 | 13 | ----- |
| 1 | 19.5 | 32 | 13.5 | ----- |
| 2 | 20 | 33 | 1 | ----- |
| 3 | 20.5 | 34 | 2 | ----- |
| 4 | 21 | 35 | 3 | 5 |
| 4.5 | 21.5 | 36 | 3.5 | 5.5 |
| 5 | 22 | 36.5 | 4 | 6 |
| 5.5 | 22.5 | 37 | 4.5 | 6.5 |
| 6 | 23 | 38 | 5 | 7 |
| 6.5 | 23.5 | 38.5 | 5.5 | 7.5 |
| 7 | 24 | 39 | 6 | 8 |
| 7.5 | 24.5 | 40 | 6.5 | 8.5 |
| 8 | 25 | 40.5 | 7 | 9 |
| 8.5 | 25.5 | 41 | 7.5 | 9.5 |
| 9 | 26 | 42 | 8 | 10 |
| 9.5 | 26.5 | 42.5 | 8.5 | 10.5 |
| 10 | 27 | 43 | 9 | 11 |
| 10.5 | 27.5 | 44 | 9.5 | 11.5 |
| 11 | 28 | 44.5 | 10 | 12 |
| 11.5 | 28.5 | 45 | 10.5 | ----- |
| 12 | 29 | 45.5 | 11 | ----- |
| 12.5 | 29.5 | 46 | 11.5 | ----- |
| 13 | 30 | 47 | 12 | ----- |
| 13.5 | 30.5 | 47.5 | 12.5 | ----- |
| 14 | 31 | 48 | 13 | ----- |
| 14.5 | 31.5 | 48.5 | 13.5 | ----- |
| 15 | 32 | 49 | 14 | ----- |
| 15.5 | 32.5 | 50 | 14.5 | ----- |
| 16 | 33 | 51 | 15 | ----- |
*this chart is intended as a general size guide. Some boot models may require more specific sizing.
Skis ride nice. Very cool jumps with them. Guy on the graphic looks like MF Doom
I started skiing last year and jumped into these this season by recommendation from Kundstadt. They are absolutely wonderful to steer, not as rigid as the expert ones, and they give me excellent control, short stopping and turning capabilities, while letting me go as fast as I want. I tried other models renting and so far these are the best. I'm smiling in the picture.
Top job Kunstadt. Thank you.
Too early to ski on the Black Pearl 84 skis…and they are a gift to my daughter. But I must say that the sales help I received during the purchasing process was exceptional. Thanks Jake!
Recently got back into skiing after a 20+ year hiatus. Elan Element caught my eye as something perfect for the terrain in my area (ice coast, lol) and skill level (solid intermediate. not looking to impress, just have fun). The manufacturer's notes on balance, turn initiation and responsiveness were accurate and the Kunstadt staff was helpful. Love these skis!
I’ve only skied on them twice, last Friday under very hard groomed conditions and then this Monday under progressively softening conditions, the skis performed very well both days !
Great ski boots from Lange,
high performance, excellent quality, amazingly comfortable. Very happy with my purchase.
Seems to be of good quality. Price and delivery both excellent!
Arrived as advrtised.
I have used this brand for many years and I really enjoy the quality and the company!!
Got the skis at a great discount, little bit of rust and corrosion on edges of the skis but considering the discount im happy
On-line order system worked well. Skis are amazing. Chelsea shop adjusted the bindings to my boots immediately!
Just bought these on sale and very happy with my purchase. Thank you to Zach for helping us out and he should get a raise.
I’m a ski instructor and a race coach, so I know a little about downhill skiing. The near immediate performance improvement that this ski gave my 6 year old was amazing. She went from snowplowing to carving in a couple days with these skis. It’s quite obvious that she can get this ski to flex allowing her to carve instead of skid turns. Yea Elan!!!
My son 18, who the skis are for has been sleeping with them since they have arrived! Too early to try but they look and feel good! Awesome graphic's, light weight.
Cheers, Brian
Best price I could find and super quick delivery. A++++ for Kunstadt
Most precise high performance boot I have ever skied. For a plug boot it is surprisingly comfortable. Body movements are transferred to the skis with precision and quickness.
Rossignol 2023 X-IUM Skating Premium S2 IFP Ski
Très bon ski, très bon prix; très content !!
Great intro boot - easy to slip on and off, stylish and keeps our kiddos toes warm!
Happy to have committed
The ski lock is easy to use, and will keep my skis safe at the slopes.
Bought them for a gift, they look great!
They are a Christmas gift so my rating is based on looks and cost, very nice!
West coast to East coast, these will tackle anything from groomers to pow to park!
Got fitted for these a while back, light as a feather, very snug, good looks to boot what’s not to love?
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Let customers speak for us
Too early to ski on the Black Pearl 84 skis…and they are a gift to my daughter. But I must say that the sales help I received during the purchasing process was exceptional. Thanks Jake!
It rides so well on all sorts of conditions. Handles well. Integrated bolts for different kinds of storage on the frame is great.
Also, credit to the folks working at the store. They were very pleasant to talk to. Would certainly recommend both the bike and the store
Good spec, good for the new cyclist, single speed keeps it easy
I’ve only skied on them twice, last Friday under very hard groomed conditions and then this Monday under progressively softening conditions, the skis performed very well both days !
This relatively inexpensive tire was easy to install and provided a smooth ride.
Love the colour and durability of it
excedllent product. very roomy and practical
Vaughn at the Bank and Heron store was super helpful, spending a long time with us and diligently taking care of all of our needs. He was knowledgeable, courteous and efficient.
Bought off the web site warehouse clearance tab. Only a couple of sizes left but mine was available. Quality shoes at a great price.
Smith products are fantastic as usual. On sale, this was a great purchase!
I'd toppled over this morning and, well into my ride, realized I'd knocked my front brake cable out of its housing. I brought it into the Bank and Heron location and met Eric. He mended the brake, then went on to clean my very dirty chain, adjusted my rear brake and gear mechanisms and sold me some chain cleaning fluid - all in good humour and in short order. I flew home on my now very happy bicycle. THANKS, ERIC!
I've purchased two bikes from here, and had my bike, skis and tennis racquet serviced here. Nothing but great service and prices!
Bonne qualité et très bon produit
Installed this on my Scott road bike last season.
Another beautifully designed accessory by knog, (the copper colour version is very attractive);
Easy installation and fits perfectly on the handlebar;
Low profile - maybe 8 mm height - so less handlebar clutter / conflicts with hand position;
Produces a nice tone with great audibility.
Going to fit my gravel grinder and spouse's Scott with them this spring.
Highly recommended!
