Microsenders Crag Trekker Kids' Climbing T-Shirt
Product Highlights
- Insanely thick 330gsm natural cotton
- Dedicated boxy-fit styling
- Direct-to-garment printing for ultimate durability
Sizing Help
- This is a BIG FIT product and designed for loose, "baggy" fitment
- Measurements table is in the product description below
- You can click the find you size link below too
Crag Trekker is the heavyweight kids’ climbing tee for young explorers who think every forest path, rocky outcrop and dusty trail might hide their next favourite crag. Made from thick, durable cotton, it’s built to survive gym sessions, outdoor missions, playground chaos and the endless wash cycles that come with kid life. Tough, comfy and adventure‑ready.
The design brings bold, retro‑inspired energy — playful colours, throwback graphics and that unmistakable Problem Child vibe that celebrates curiosity, courage and the thrill of discovering new rock. It’s a tee that tells kids to look beyond the obvious, follow their instincts and chase the climbs no one else has found yet.
With a movement‑ready fit and long‑lasting construction, Crag Trekker keeps Microsenders comfortable as they scramble, scout and dream up their next big adventure. Fun, expressive and proudly climber‑coded, it’s the perfect shirt for kids who are always searching for the next great line.
NOTE: some sizing is done via a "flat lay measurement" (i.e. measuring from one side of the body to the other, rather than circumference). If you prefer a circumference, you can generally just double the number.
Size Chart
| S | M | L | XL | 2XL | ||||||
| inch | cm | inch | cm | inch | cm | inch | cm | inch | cm | |
| Chest | 14.2 | 36 | 15.6 | 39.5 | 16.9 | 43 | 18.3 | 46.5 | 19.7 | 50 |
| Length | 18.1 | 46 | 20.1 | 51 | 22.0 | 56 | 24.0 | 61 | 25.2 | 64 |
| Shoulder | 14.6 | 37 | 16.1 | 41 | 17.3 | 44 | 18.9 | 48 | 20.1 | 51 |
| Sleeve length | 4.8 | 12.3 | 5.2 | 13.3 | 5.6 | 14.3 | 6.0 | 15.3 | 6.4 | 16.3 |
Measurement Help
- Our sizing is done via a "flat lay measurement" (i.e. measuring from one side of the body to the other, rather than circumference). If you prefer a circumference, you can generally just double the number.
- Detailed measurement tables are in the product description above
THE FITMENT
*BIG FIT STYLING* MODEL WEARS A SMALL. These tees are designed with large, "BIG fit" in mind. The model is exactly 6ft (182cm) & 81kg, and wears a SMALL (S) size. We recommend only choosing M and bigger if you're a heavy build and/or substantially taller than 6ft.


ULTRA-THICK ORGANIC COTTON ... Not Overpriced Cloth with a fancy logo
Eco-friendly, high-durability styles, made from predominantly natural materials, with most t-shirts crafted using 300gsm+ cotton. Even our printing ink is vegan and water-based.

VIBRANT & DURABLE PRINTS
We use a mix of DTF (direct to film) and DTG (direct to garment) printing techniques to maximise the vibrancy of our designs, as well as protect them from multiple washes and thrashing at the crag.
DOUBLE STITCHING
Locked in seams for durability over repeated washes and outdoor use.
INSANELY THICK COTTON
The minute you unwrap your t-shirt, you will honestly feel the difference. Most of our products are over 50% thicker than every other t-shirt you own. You can hold us to that.
Frequently asked questions
Still looking for an answer?
Where are you based?
We're headquartered in Australia, but we have warehouses in the USA, Asia and Europe. We'll typically ship from the closest one to you.
What sizes are available?
Our climbing wear is available in a wide range of sizes from XS to XXL. Each product includes a detailed size chart to help you find your perfect fit.
How do I care for my gear?
For the best results, wash your Problem Child gear in cold water, avoid fabric softeners, and let it air dry to maintain stretch and durability.
Do you offer international shipping?
Absolutely. We ship worldwide and provide tracking for all orders so you can follow your package every step of the way.
What is your return and exchange policy?
We accept returns and exchanges within 7 days of order delivery, as long as items are unworn, unwashed, and in original condition.
Do you release new collections regularly?
We launch new collections monthly, offering fresh designs and updated styles so you can always stay motivated and on trend.










































