Home / Outlet / Mountain Biking / Never Underestimate an Old Man With a Mountain Bike T-shirt
Never Underestimate an Old Man With a Mountain Bike design on a Military Green Gildan Softstyle t-shirtNever Underestimate an Old Man With a Mountain Bike design on a Navy Gildan Softstyle t-shirtNever Underestimate an Old Man With a Mountain Bike design on a Black Gildan Softstyle t-shirtNever Underestimate an Old Man With a Mountain Bike design on a Charcoal Gildan Softstyle t-shirt
Outlet · Mountain Biking

Never Underestimate an Old Man With a Mountain Bike T-shirt

For people who ride the climb to earn the descent.

★★★★★ 4.8 from 830 reviews across the shop
$67.99$50.99Save 25%

Colour: Military Green

Size

★★★★★ 22,991 tees sent since 2024

Free shipping when you buy 3 or more

Satisfaction guaranteedFewer than 2 in 100 ever need it
30 day returnsFaulty or wrong size, we sort it
Artist madeMade by us, not licensed
Made near youUS, UK or Europe
Fewer than 2 in 100 orders ever need our guarantee.
Any 3 items
Any 3 itemsFree shipping
 Any 4 items
Any 4 items5% off, free shipping
MOST POPULAR Any 5 items or more
Any 5 items or more10% off, free shipping
BEST VALUE
Description

Drawn for the ones who session the same corner until it is right.

Never Underestimate an Old Man With a Mountain Bike is lettered plain across the chest, no scene behind it, just the warning. It is the kind of line that gets read twice on the trail.

Our artwork on a lightweight cotton tee. Its own range of designs, a lighter shirt, a lower price.

  • 4.5 oz (153 g/m²) lightweight 100% ring spun cotton
  • Sport Grey is 90% cotton, 10% polyester
  • Regular unisex fit, side seamed, printed label
  • Front print, direct to garment
  • Sizes S to 3XL
  • Printed and posted from the facility closest to you
Size and fit
SMLXL2XL3XL
Length2871.12973.73076.23178.73281.33383.8
Width, laid flat1845.72050.82255.9246126662871.1
Sleeve16.7542.517.87545.419.12548.620.37551.821.62554.922.7557.8

All measurements in inches, taken with the garment laid flat.All measurements in centimetres, taken with the garment laid flat.

Measured flat, in inches. Width doubles as your chest measurement. Between sizes? Go up one. For a recommendation against your own height and weight, use the size guide above.

Shipping
Made and posted from the facility closest to you.
United States4 to 6 days
United Kingdom2 to 4 days
Europe3 to 4 days
Canada2 to 5 days
Australia4 to 7 days
100% satisfaction guaranteed

If it turns up wrong, damaged, or not how it looked on screen, we make it right. A replacement, a credit, or your money back, within 30 days.

Full details are in our returns and refunds policy.

Email customerservice@aukcliff.com and a person answers.

Never Underestimate an Old Man With a Mountain Bike T-shirt
Never Underestimate an Old Man With a Mountain Bike
$67.99 $50.99 · Military Green · S

Goes with this

Same interest, different drawing.

The Line You Picked design on a Natural Gildan Softstyle t-shirtOutlet

The Line You Picked

+2

$67.99 $50.99
Sorry I'm Slow, Waved Through on the Trail design on a Black Gildan Softstyle t-shirtOutlet

Sorry I'm Slow, Waved Through on the Trail

$67.99 $50.99
Feet Up, Bike Leaned Within Easy Reach design on a Black Gildan Softstyle t-shirtOutlet

Feet Up, Bike Leaned Within Easy Reach

$67.99 $50.99
Each Letter Filled With Its Own Slice of Trail design on a Jade Dome Gildan Softstyle t-shirtOutlet

Each Letter Filled With Its Own Slice of Trail

$67.99 $50.99
Imperfect Ring for a Front Wheel, Bike design on a Charcoal Gildan Softstyle t-shirtOutlet

Imperfect Ring for a Back Wheel, Bike

$67.99 $50.99
Permanently Cranky Bike Crank Arm design on a Navy Gildan Softstyle t-shirtOutlet

Permanently Cranky Bike Crank Arm

$67.99 $50.99
All Mountain, Goat on a Bike design on a Black Gildan Softstyle t-shirtOutlet

All Mountain, Goat on a Bike

$67.99 $50.99
Gear Acquisition Syndrome, Red Squirrel in the Woods design on a Navy Gildan Softstyle t-shirtOutlet

Gear Acquisition Syndrome, Red Squirrel in the Woods

$67.99 $50.99

Best sellers

View all

What people are actually buying.

AukCliff Simple Comfort Colors T-shirt Moss / S Simple Comfort Colors T-shirtBest seller

Simple

+1

$75.99
AukCliff Rear Print Comfort Colors T-shirt True Navy / S Coastal Waves Comfort Colors T-shirtBest seller

Coastal Waves

+1

$101.99
AukCliff Captain Puffin T-shirt Moss / S Captain Puffin™ Wildlife Photographer Comfort Colors T-ShirtBest seller

Captain Puffin Wildlife Photographer

+10

$84.99
AukCliff Captain Puffin T-shirt Moss / S Captain Puffin™ Hiker Comfort Colors T-ShirtBest seller

Captain Puffin Hiker

+10

$84.99

Stephen, Emma and their son on a rock below Aoraki

Three of us, and a lot of walking

AukCliff is not a faceless shop. It is a small family business, started by a landscape photographer who moved to New Zealand for the space to explore, and the designs are made by us.

We are out most weekends. What we see comes back as a design, which is why the range is full of the specific things you only notice if you were actually there.

Read our story

Small family. Made by us. Made when you order it.

Stephen and his son above a glacier valley, both in AukCliff

Family owned, and it shows

Our family runs this. You are not writing to a support queue, you are writing to us, and we answer.

Walking the shoreline at sunset, the sun low over the water

Art for the adventure in you

Every design is made by us for one kind of person and exists nowhere else. Not licensed, not bought in from a catalogue every other shop is also selling.

Folded tees on the workshop bench

Made responsibly, made to order

Nothing is made until you buy it, so there is no overproduction and no unsold stock going to landfill. It comes from whichever facility is closest to you.

Worn out there

Dust, loam, and the push back up.

AukCliff t-shirts worn at a forest trail, photo 1AukCliff t-shirts worn at a forest trail, photo 2AukCliff t-shirts worn at a forest trail, photo 3

Questions people ask before they buy

The answers are the same ones we would give you by email.

What is the design on this t-shirt?
A typographic design with the line Never Underestimate an Old Man With a Mountain Bike lettered plain across the chest, no illustration behind the words. It is a warning aimed at anyone who judges riders by age alone. Printed large on the front, on a lightweight cotton tee.
Who is this mountain biking t-shirt for?
Mountain bikers who have been riding decades longer than the young rider who just underestimated them, and anyone who enjoys proving a point on the climb. It works as a trail tee, a gift for an experienced rider, or an everyday layer.
How does the Outlet tee fit and feel?
A regular unisex cut on a 4.5 oz lightweight cotton blank, lighter than our heavyweight garment dyed tees. Side seamed with a tear away label. Order your usual size for a regular fit, or size up if you want a looser drape.
What size should I order?
Use the size guide under the size buttons. Give it your age, height and weight and it recommends the size for this exact garment. It is a better answer than a chart, because it knows what this shirt measures rather than what a t-shirt usually measures. Failing that, take your usual size, and go up one if you are between sizes or want it looser.
How long will it take to arrive?
It is made for you after you order, which takes a day or two, then posted from the facility closest to you. United States 4 to 6 days, United Kingdom 2 to 4, Europe 3 to 4, Canada 2 to 5, Australia 4 to 7.
Will the print crack or fade?
No, not if you look after it. It is printed into the fabric rather than pressed on top as a layer, so it moves with the shirt instead of sitting on it and lifting. Wash it cold and inside out, dry it low, and it stays as it arrived.
What if I do not like it?
Tell us within 30 days and we make it right, with a replacement, a credit or your money back. Fewer than 2 in 100 orders ever need it.
Do you ship to my country?
We make in the United States, United Kingdom and Europe and ship worldwide from whichever is closest.
Can I mix designs in a bundle?
Yes, and it is the point. Any three items get free shipping, four take 5% off, five or more take 10%. Tees, hoodies, hats, any mix.

Browse other interests

See all fourteen

Every design sits in the thing it is actually about.

Mountains and PeaksMountains and PeaksHikingHikingAdventureAdventureRivers and LakesRivers and LakesCoast and OceanCoast and OceanBirdingBirdingSkiing and SnowSkiing and SnowVan Life and OverlandingVan Life and OverlandingCampingCamping