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Arena competition swim trunks for boys - ST 2.0 - Light blue


Pre-order In stock In stock Only 4 in stock Discontinued


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6-7 years / 116 cm
In stock Only 0 in stock Discontinued
8-9 years / 128 cm
In stock Only 4 in stock Sold out - notify me
10-11 years / 140 cm
In stock Only 0 in stock Discontinued
12-13 years / 152 cm
In stock Only 0 in stock Discontinued


1 pcs. Buy more and save
Why? Our warehouse is chaos-organized. The same sizes/colors are not placed in the same location. We save money in our handling when we only have to pick from one location - that's why the quantity discount only applies to the same size and color. Consider it a bonus that we share the savings with you.

Only applies to the same size and color

NB! This is a pre-order with delivery in week false (01/01 - 08/01)

We have already confirmed that the delivery of this item is on its way to our warehouse. Read more below.

🚚 Scheduled delivery time: Week false (01/01 - 08/01)

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However, please be aware that this date is indicative, but in 98% of cases, it is met. We cannot specify whether it will be at beginning or the end of the respective week. If this changes for your order, we will always proactively inform you of the new expected delivery date via email.

💰 Free shipping on all pre-orders regardless of the amount

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If you order this product as a pre-order, you will receive free delivery with the cheapest delivery method regardless of the order amount. This also applies to any other other purchased items in the same order.

🖇️ Order will be shipped together with the pre-ordered item

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If you order other products on the same order along with this pre-ordered item, then your entire order will first be shipped together at the same time as the pre.ordered item, which is in week false (01/01 - 08/01).

🔄 365-day return policy starts once when we dispatch the order.

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We will charge the full amount for your order, including the pre-order item and any other purchased items, 2 days after the order is completed. We do this to avoid additional late payment fees. You can still cancel and get a refund for the pre-order item and/or the entire order until dispatch - it just requires a call, a chat, or an email.

NB! Pre-order for week false (01/01 - 08/01)
Get notified when back in stock

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Price including VAT etc.

available colors

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Free delivery over €79 (under = €4)

Get free delivery to a parcel shop with An Post on orders over 79€. Below that, delivery costs from just 4€. Delivery is 3-5 days for orders placed before 9 PM

365 days free exchange

We (also) hate stress. That's why you have 365 days to exchange/get a voucher. And it's completely free through our returns system. For regular returns, you have a full 30 days. 

Trustpilot 4.7 / 5 ⭐⭐⭐⭐⭐ (+650.000)

We have helped more than 650,000 people with their equipment and swimwear. They have given a Trustpilot score of 4.7 out of 5.0. They all chose Watery because of these unique benefits.

Contact us 7 AM - 9 PM all weekdays

We love to help. That's why we're available Monday-Friday from 7 AM to 9 PM. In the weekend between 9 AM to 3 PM. See contact options here.


The perfect and by far the best-selling first competition swim trunks for new competitive swimmers. 100% FINA approved = Can be used in Irish / international swim meets.

Made for competitions, they are equipped with special water-repellent material that mimics water resistance in the water.

Provides good muscle support without being too tight and at the same time allows for free movement.

Easy size guide according to height:

  • Size 6-7 years = 116 cm tall
  • Size 8-9 years = 128 cm tall
  • Size 10-11 years = 140 cm tall
  • Size 12-13 years = 152 cm tall

With these on, your boy will almost feel like he is flying through the water compared to his non-competition swim trunks he has likely been swimming in. And therefore highly likely to set a couple of new personal records.

This, combined with this pretty cool light blue design, will make your boy look sharp on the starting block at the next meet.

Features / advantages of Arena ST Junior 2.0 competition swim trunks - light blue:

  • Optimal muscle support and freedom of movement
  • Helps the body in the optimal hydrodynamic position
  • Are 100% FINA approved
  • Made of 71% Polyamide and 29% Elastane, which gives good durability along with the freedom to move in them.

Fundamentally, these are the best starting competition swim trunks on the market for younger boys and swimmers, where the boy will still experience wearing a pair that tightens a bit and provides less water resistance in the water.

To ensure the unique swim trunks are treated correctly, make sure:

  • Immediately after the last race of the day, wash them in the coldest water possible
  • Do not wring them dry, hang them up after use (not in the sun)
  • Do not leave them wet in a bag for a long time
  • Do not wash them in a washing machine or dryer.
  • When putting them on, do not use fingertips, as nails can come through the relatively thin fabric.

If your boy is up to 12 years old and needs his first pair of competition swim trunks and they should not be the very expensive ones, then these ST Junior 2.0 swim trunks are the best choice. Clearly. The swim trunks are Fina approved, comfortable to wear, and the water glides off well. Recommended for new competitive swimmers aged 6 to 13 years.

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Customer Reviews

Based on 9 reviews
Linda Mattke

Arena competition swimming trunks for boys - Powerskin ST 2.0 - turquoise

Competetion trunks for my son

My son was really happy with the competition swimming trunks

Thomas Herrmann
Very good shipping worked well, was completely surprised, the site works flawlessly, prices ...

Very good shipping has top

Anne S.
Good fit

They live up to the description and are size equivalent

Delicious board

We were out and standing on the board for the first time today. It certainly lives up to expectations and we are super happy with it. We are beginners inside for & quot

Kenneth M.
Very good product

Really good competition bathing suits - great satisfaction from here.

Berit E.
Super good fit, comfortable

The son is well pleased with the new swimming pants.

Diana N.
Good competition pants

Good and cheap competition pants for the new competitive swimmer

Thim P.
Fast delivery and everything OK!

Fast delivery and everything OK!

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Do you have questions about products, recommendations, or returns? Click here to ask our product experts and customer service between 7 AM to 9 PM on weekdays. We look forward to hearing from you.

Free exchange / easy returns

Yes, that's right. Exchange is completely free when using our fast return system - without the need for a printer. Click here to learn more. Regular returns cost €5.

Free 3-5 days shipping over €79

Delivery is on us when you purchase for over €79. Below that threshold, it costs starting from €4. We deliver with An Post.

In doubt? Check out our recommendations.

Not sure if this is the right product for you? Click here to see our detailed product recommendations. Handpicked by our founder.



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