Insect Blocker at Columbia: a not stupid technology!

Approved by the Environmental Protection Association in the United States, Insect Blocker technology offers, as its name suggests, lasting protection against insects.

This protection, applied to outdoor clothing from the Columbia brand, can be found in the products of the Insect Blocker range.

Inserted in the heart of the fiber of the garment, Insect Blocker technology acts in a long-lasting way and repels ticks, ants, mosquitoes and even flies.


Like the entire tourism sector, I-Trekkings has been hit hard by the economic crisis that follows covid-19. A little help from you would be appreciated. How? ‘Or’ What ? By sharing this article for example or by purchasing from our partners (this is also a way to support them. Please do not click to click. Buy only if you have a need). There are many other ways to support I-Trekkings. To learn more, it’s here.

The top 10 of our partners in alphabetical order:

  • Allibert Trekking (hikes & treks around the world)
  • Alpinstore (outdoor shop – Clearance in progress. Up to -70% on more than 4300 products)
  • Amazon (bookstore and bazaar)
  • Chamina Voyages (hiking in France and Europe)
  • Decathlon (outdoor shop)
  • Ekosport (outdoor shop – destocking operation: up to -80% until September 27)
  • La Balaguère (hiking in the Pyrenees and around the world)
  • Hiking (hiking in the Pyrenees)
  • Snowleader (outdoor store – Summer clearance. Up to -70% on more than 10,000 products)
  • Trekkinn (outdoor shop – Up to -50% right now)

A great alternative to insecticides sometimes applied to the skin, Insect Blocker promises effectiveness even after 70 washes. The technology is ideal for practicing outdoor activities in peace.

  1. Casquette Insect Blocker : 29,95€
  2. Bandana Insect Blocker : 14,95€
  3. Chemise Insect Blocker : 79,95€
  4. Chemise Insect Blocker : 69,95€
  5. Pantalon Insect Blocker : 79,95€
  6. Cachalot Insect Blocker : 34,95€
  7. Chemise Insect Blocker : 69,95€
  8. Chemise Insect Blocker : 69,95€
  9. Pantalon Insect Blocker : 79,95€

Find all Columbia products.

Hawaii: Where the dream beaches are made of fish droppings

Long-distance travel Hawaii

Where the dream beaches are made of fish droppings

There are beautiful beaches in Hawaii. Vacationers love them, but often don’t even know where the sand actually comes from. The history of the development of the light grains is quite interesting.

| Reading time: 2 minutes

HHave you ever been on a green beach? There is one in Hawaii: It is olivine crystals that give the sand on Papakolea Beach on the largest island in the US state its unusual color. On the Big Island there is not only one of the world’s rare green beaches, but also the Punaluu Black Sand Beach, which is black because it consists of lava.

But it is above all the white beaches that appear again and again in rankings of the world’s most beautiful beaches and that fascinate most holidaymakers in the first place. But: Only very few who enjoy basking in the sun on the sand will suspect where a good part of the fine sand actually comes from.

Sand is discharged in clouds

Because a not insignificant amount of sand is the excrement of parrotfish. Hawaiians call the animals, which romp around in tropical waters, “eagle owl”, in German they are called parrotfish because of their fused teeth, which – at least in some respects – are reminiscent of parrot beaks.

With them they graze the low vegetation cover on the limestone surfaces of the coral reefs. The sediment, which is removed at the same time, is crushed by the fish and then excreted in the form of sand clouds. Larger specimens are real sand factories – they produce more than 300 kilograms of sand per year in this way. Other inhabitants of the Pacific also produce sand, but no other animal is as hard-working as the parrotfish.

Females become males

For the area around the snorkeling hotspot Hanauma Bay in the southeast of the Hawaiian island of Oahu alone, this means an annual production of hundreds of tons of freshly made sand, as numerous parrotfish live here. The crater of an extinct volcano forms the bay, which is open to the sea and is home to so many species of fish.

The colorful parrotfish are not only beautiful and useful – in addition to their sand production, they also promote the growth of corals through their cleaning – they also have another unusual property: like many other wrasse, they are hermaphrodites. This means that they can be a female first, only to later become a male.