Portable blenders are designed to be lightweight and easy to carry, making them perfect for those who want to enjoy their favorite smoothies and drinks on-the-go. Here are some common features you may find in portable blenders:

1. Size and weight: Portable blenders are typically smaller and lighter than traditional countertop blenders, making them easy to carry around in a backpack or purse.

2. Battery life: Many portable blenders are battery-powered, so you'll want to look for one with a battery that has a long life. This will allow you to blend multiple drinks without needing to recharge the battery.

3. Capacity: The capacity of a portable blender can vary, but most models hold between 10-20 ounces of liquid.

4. Blade quality: The quality of the blender's blade is important for efficient blending. Look for models with stainless steel blades that can easily chop through ice and frozen fruits.

5. Motor power: Portable blenders usually have less powerful motors than countertop blenders, but you'll still want to choose one with enough power to blend your desired ingredients.

6. Safety features: Some portable blenders come with safety features, such as automatic shutoff if the blender is overloaded or overheats.

7. Ease of cleaning: The best portable blenders are easy to clean, with detachable blades and cups that can be easily rinsed or washed in a dishwasher.

8. Noise level: Some portable blenders can be quite loud, so if you plan to use your blender in public places like offices or cafes, you may want to look for a quieter model.

Overall, portable blenders are a convenient and easy way to enjoy your favorite drinks on-the-go. When choosing a model, consider your specific needs and look for features that will make your blending experience smooth and effortless.