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ON-ONEs highly breathable, performance-fit undershorts with an advanced seamless tubular knit. A firm favourite for those who require that much-needed comfort and support without the padding. Equipped with anti-bacterial, fast-drying advanced technical features, your ON-ONE shorts will be your go-to wardrobe staple for style and comfort.

From £5.99



Black / Large - XLarge
Sold Out £5.99

ON-ONEs Performance Fit undershorts are the perfect breathable and lightweight comfort companion, designed to keep you protected during those good times in the saddle.

These antibacterial, seamless construction shorts can be worn under jeans, or any other non-cycling specific garment. Not everyone prefers, ultra-fitted lycra to participate in their daily cycling activities. Whether youre commuting to work, or just partaking in a leisurely Sunday ride, ON-ONEs performance fit undershorts, provide added comfort and protection against saddle sores, whilst keeping you cool and dry at all times.


  • Fit: Ergofit: Seamless tubular knit. Lightweight design, non visible through your outer layer
  • Odour Resist: Siltex prolen: antibacterial protection against funghi and bad smells
  • Protection: UV-X protect: prolen sunprotect, Protects from UV radiation
  • Fast Drying: Prolen Dryfast: Higher drying speed, more effective moisture transportation
  • Conditions: Cool and warm conditions
  • Comfort: Woven labels minimises irritation. Seamless construction minimises chafing.


  • Protection from sores and discomfort even when riding in non-cycling specific clothing
  • Keep cool in the summer
  • Keep warm in ther winter
  • Keep you and your outer layer dry at all times
  • Lightweight design, non-visible through your outer layer

Why use a base layer or seamless under garment?

We highly recommend that riders of all levels wear a base layer in all conditions. Our vast range of base layers are specifically designed and professionally tested to fulfill bodily comfort and performance needs at all times.

Base layers in summer?

Yes! A base layer is also necessary in the summer heat!

Our highly technical, seamless base layers are not just to keep you warm in the cold winter months. Even in the hottest of conditions, a base layer plays a very important role in comfort and performance.

Our seamless layers have a strong wicking capacity, drawing moisture away from your body, preventing sweat from building up on your skin.

Size Chart:

Seamless Underwear Planet X On-One
Waist n/a n/a 28 32
Front Length to Gusset n/a n/a 23 26
Back Length to Gusset n/a n/a 20.5 23.5
Full Length n/a n/a 35 38
Bicep Width 15 17 n/a n/a
Gusset Length n/a n/a 14x10 14x10
Gusset Width n/a n/a 32 32
Leg Opening n/a n/a 17 19.5

Additional Information


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