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Baselayers & undersuits for motorcycle, ski, stormtrooper movie props & cosplay
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One piece under suit

Product Code: ONEA1 | Manufacturer: extreme racing | Condition: New | Weight: 0.5Kg

extreme racing one piece under suit is manufactured using a specially blended cotton & lycra fabric for enhanced moisture management & thermal protection. 

Our blended fabric reacts to all kinds of different conditions, from excessive heat to extreme cold. In warm weather, perspiration is removed from the skin surface keeping the wearer cool, conversely in cold conditions the natural thermal properties of the fabric allow heat to be retained. Should excess heat occur, the fabric disperses it in the usual manner. 

Our design ensures the under suit will not ride up whilst riding & aid your durability whether skiing or any other energetic activity keeping you fully focused at all times. 

The fabric is light weight & durable keeping the wearer comfortable, the 2 way zip allows easy toilet trips & with a non iron cool wash care instruction simple to look after.

Designed to be worn 365 days a year the extreme racing one piece base layer gives support to key areas with its highly flexible yet supportive fabric blend

Sizing FAQ: if you are in between sizes always go for the next size up, for example 42" chest & 5' 10" Feet tall choose the XL , if you are tall with a small chest size choose the height for sizing.   

Mens chest sizes  

Womens sizes  


32"-36" 71-92cm
max height 5' 6"(168cm)




38"-40" 92-97cm
max height 5' 8"(175cm)




40"-42" 97-100cm 
max height 5' 10" (180cm)




42"-44" 100-105cm
max height 6' 2" (186cm)




44"-46" 105-110cm
max height 6' 4" (190cm)



One piece under suit

Average Rating 4.9 out of 5


I have to be honest, I was a little dubious about ordering this suit in an XL size, as I’m usually a L in everything else. The suit arrived and to my delight, fits perfectly. I’m 6ft and it’s the right height and fit all over. Looking forward to getting this on under my leathers this summer.

Jonathan Fox Jun 20 2019, 13:30 pm

Affordable Quality

Just received this suit today after purchasing through their eBay store. To start, good communication and it arrived two days early! The suit feels to be well made and quality, above the 30 quid price I paid. I usually like my base layers tight and being 5'8 with a 40" chest and 32" inch waist the large is perfect ( I usually go medium). The material is really comfy, smooth and stretchy due to the Lycra. The two way zip for toilet breaks is neat. It feels like it will wear well and should be as good in winter as summer. Yet to wear on the bike under my goretex two piece, but I have no doubt it will exceed my expectations.

Ben Briggs Mar 14 2017, 17:50 pm

Under Suit

Arrived on time & size was as described, fitted great. Thanks

Dave Park Feb 27 2016, 11:27 am

Class service

Fantastic service all around, ordered one Piece wrong size, contacted via email, swift exchange and very fast dispatch, fit perfect, a* Conclusion. Definitely recommend and use extreme racing again

Anonymous Nov 27 2015, 20:24 pm


Just finished my first ride with this suit on. Comfortable to wear and does exactly what it says on the tin. Excellent

KPH May 18 2015, 18:11 pm

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