# Thermal underwear Lahti Pro ThermoActive S/M — moisture-wicking breathable base layer

**URL:** https://aio.lv/en/product--lahti-pro-5053770--10781713
**Data updated:** 2026-03-12 10:08 (EET)
**Category:** Workwear
**Manufacturer:** lahti pro
**Manufacturer code:** 5053770
**EAN:** 5903755053770
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 13.21 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lahti-pro-5053770--10781713

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.89 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

Lahti Pro ThermoActive thermal underwear in size S/M is a moisture-wicking, breathable base layer designed to regulate body temperature and keep skin dry during physical work or outdoor activities. Constructed for close fit and layered use, it serves as a first layer under workwear or sports clothing to improve comfort and reduce chill from sweat accumulation.

## Long description

Lahti Pro ThermoActive thermal underwear in size S/M is a breathable base layer designed for workwear use. The fabric blend of 72% polyamide, 21% polyester and 7% elastane features a cellular knit that provides effective ventilation and a high-density weave for thermal protection. The garment is CE certified (Category I) to EN ISO 13688.
Advantages
The cellular material promotes air circulation while a specialized knit actively wicks moisture away from high-sweat areas to keep the skin drier. Cuffs ensure a close fit to the body for comfort and additional protection against cold. The elastic content maintains shape and mobility during physical tasks.
Suitable for
Layering under work uniforms and protective clothing
Cold-weather outdoor work or tasks with variable activity levels
Situations requiring moisture management and thermal insulation
Key specifications
Brand: lahti pro
Model: ThermoActive
Size: S/M
Material: 72% polyamide, 21% polyester, 7% elastane
Construction: cellular knit, high-density weave
Standards: CE Cat. I, EN ISO 13688
MPN: 5053770
EAN: 5903755053770
How to use
Wear the ThermoActive underwear as a base layer directly against the skin beneath outer garments. Ensure cuffs sit snugly to prevent drafts and allow the moisture-wicking knit to transport sweat away from the body. Use size S/M for a close, ergonomic fit according to the stated sizing.
Usage recommendations
For best performance, wash according to the care label instructions, avoid high-temperature drying and do not use fabric softeners, which can reduce moisture-wicking properties.

## FAQ

### How much does the Thermal underwear Lahti Pro ThermoActive S/M cost, and is it available for purchase?

The price is 15.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 02.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All lahti pro products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized lahti pro service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/10781713/60031399_large.webp