New Trip Editorial Department Last updated: July 10, 2026

Three criteria to avoid regrets when choosing a suitcase | Learn the right way to choose from mistakes

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I packed my favorite clothes for the trip, but...

The wheels on my suitcase broke while I was traveling, and I almost cried from the weight of the luggage on the stairs at the station...

Have you ever had such an experience?

In fact, choosing the wrong suitcase can have a big impact on the excitement of your trip.

This time, based on the "common" mistakes that many travelers have experienced,

We will introduce new criteria for choosing so that you don't regret your decision.

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Table of Contents

1. Will choosing a suitcase based solely on "cheapness" ruin your trip? Pitfalls in choosing a suitcase

2. [Durability Standards] Avoid the trouble of being unable to move while traveling

3. [Efficiency Standard] Resolving minor travel inconveniences with functionality

IV. [Comfort Criteria] Enjoy your trip in your own way without worrying about what others think.

5. For those who don't want to make a mistake when choosing a suitcase: The one you should choose now.

Summary: Make your trip "more free and safe"

一、サイズ選び：「大きめ」が正解とは限らない

・Common Pitfalls

Deciding based on price alone, thinking "They all look the same and are cheap, so it's fine," is one of the most common mistakes people make.

・Differences that cannot be seen from the spec sheet alone

The terms "high durability" and "smooth ride" used in online shopping all seem the same. However, the moment you actually load your luggage and start walking on the asphalt, the difference becomes clear. Factors that cannot be conveyed through photos or numbers alone, such as "grip over bumps" and "ease of handling," are what make the difference in how tired you get on your trip.

・Three mistakes I don't want to repeat

The regrets that many travelers experience can be broadly summarized into three categories.

  • Breakdown: Your wheel breaks in unfamiliar territory, leaving you at a loss.
  • Inconvenient: It is difficult to take luggage in and out smoothly, which takes time and energy.
  • Awkwardness: The noise of the casters and the out-of-place look can be stressful.

Let's take a closer look at the three criteria to help you avoid these common mistakes and choose a car that satisfies you.

・Why does it happen?

Many people tend to choose a larger size suitcase, anticipating an increase in souvenirs and luggage.

However, when the size increases:

  • The weight of the main unit increases: An empty suitcase itself is heavy, making it a burden to carry around.
  • Travel on trains and Shinkansen becomes difficult: You'll struggle at ticket gates, stairs, and with space inside the train.
  • It takes up storage space: Storage at home or in a hotel becomes inconvenient.

・Key Points for Confirmation

  • Check the estimated travel days and luggage amount: S size for 2-3 nights, M size for 4-7 nights
  • Consider your mode of transport: A smaller size is more convenient if you're traveling frequently by train or Shinkansen
  • Pack to 70-80% capacity for your departure: Leave room for your return trip

New Trip offers S, M, and L sizes, allowing you to choose according to your travel days and mode of transport. If you're unsure, we recommend choosing a size based on the principle of "packing to 70% capacity for your departure."
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二、軽さと耐久性のバランスを見る

・Common Pitfalls

"I chose it just for its lightness, and it broke after one trip."
"It was light, but didn't have enough storage capacity."

・Why does this happen?

This is a case where "lightweight = justice" is considered, and only lightness is prioritized. However, some lightweight models:

  • Achieve lightness by using thinner materials: leading to low durability and vulnerability to impact
  • Achieve lightness by reducing storage space: resulting in less capacity than expected
  • Have poor caster performance: making them unsuitable for long-distance travel

These are some examples.

・Points to confirm

  • Check the balance between material and durability: Understand the characteristics of materials such as ABS resin, polycarbonate, and aluminum.
  • Also check the performance of the casters: Quietness, double wheels, smooth rotation.
  • Consider whether it can be "used for a long time" rather than just being "lightweight".

At New Trip, we offer a lineup that can be chosen according to your needs, including models that emphasize the balance between lightness and durability (e.g., 0201 Series) and models that use HINOMOTO casters with excellent quietness even with large capacity (e.g., 0502 Series).
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三、自分が本当に使う機能だけを選ぶ

・Common Pitfalls

"I bought the fully-featured model, but I ended up not using many of the functions."
"The front opening seemed convenient, but I hardly ever opened it."

・Why does it happen?

When features like cup holders, USB ports, and front-opening designs are available, I tend to choose them, thinking, "These could be handy." However:

  • Increased features mean increased weight.
  • The price goes up.
  • Many features often go unused.

・Checkpoints

Consider if you'll "actually use" these features based on your travel style.

  • Frequent train travel → A stopper is convenient
  • Business trips with a laptop → A front-open design is convenient
  • Tend to buy many souvenirs → An expansion function is convenient

New Trip offers models specialized for specific uses, such as "front-open," "stopper," and "expansion function." You can choose only the features you truly need, according to your travel style.
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四、 消耗しやすい部分を事前にチェックする

・Common Pitfalls

"It looked nice, but the zipper broke right away."
"The casters stopped working after a year."

・Why does it happen?

When choosing a suitcase, many people tend to focus on its appearance and design.

However, the parts that are actually most prone to breaking are:

  • Wheels: The part that bears the most load. If the quality is poor, they stop moving quickly.
  • Zippers: Repeated opening and closing can cause deterioration. Thickness and material are important.
  • Handles: The telescopic part is prone to breaking. Check if it moves smoothly.

・Points to check

  • Check the quality of the casters: Brand (e.g., HINOMOTO), double wheels, etc.
  • Check the thickness and material of the zippers: Reliable brands like YKK are recommended.
  • Check that the handle extends and retracts smoothly: Try moving it by hand.

By checking the quality of these "parts that are prone to wear" before purchasing, you can choose a suitcase that will last a long time.
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五、 価格だけでなく保証やアフターサービスも確認する

・Common Pitfalls

"I bought a cheap, popular model, but there was no repair service when it broke."
"The warranty period was short, so I had to pay for repairs myself right away."

・Why does it happen?

This refers to situations where purchases are made based solely on price or appearance, without checking the warranty or after-sales service. Specifically:

  • Short warranty period (or no warranty)
  • No repair service available
  • No inquiry contact point

Models with these characteristics can end up being more expensive in the long run.

・Points to confirm

  • Check the warranty period: Aim for at least one year.
  • Confirm repair services and after-sales support:
  • Check brand reputation and reviews:

While price is important, peace of mind that the suitcase "can be used for a long time" and that "you can get support if it breaks" is also crucial when choosing a suitcase.
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まとめ：後悔しないスーツケース選びのチェックリスト

When choosing a suitcase, it's important not only to consider its price and appearance, but also to imagine how you want to spend your time while traveling.

  • Durability that allows you to walk without fear of trouble.
  • "Efficiency" by reducing unnecessary movements
  • Comfort that is pleasant for both oneself and those around you.

Just by keeping these three criteria in mind, your trip will be smoother and more enjoyable. Why not go out and see new scenery with the "best partner" like New Trip 0501 , who will make your dreams come true?

執筆・監修

New Trip編集部
本記事は、スーツケース・旅行用品ブランド「New Trip」の編集部により制作されました。
製品開発やユーザーの声を活かしながら、ユーザーに合ったスーツケースや、旅行・出張をより快適にするアイテムを発信しています。

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