Rashguards are already known for providing sun protection, comfort, and performance during water activities.
But some styles include an extra feature that often sparks curiosity: thumb holes.
These small openings at the end of the sleeves allow your thumb to pass through the fabric, extending coverage over part of your hands.
While they may look like a small detail, thumb holes can offer several practical benefits depending on how you plan to use your rashguard.
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What Are Thumb Holes Designed For?
Thumb holes are designed to keep sleeves securely in place.
When you insert your thumb through the opening, the sleeve stays anchored to your hand rather than sliding up your arm.
This is especially useful during activities that involve repetitive movement, such as swimming, surfing, paddleboarding, or beach volleyball.
By holding the sleeve in place, thumb holes help maintain full coverage over the wrists and lower arms—areas often exposed to intense sunlight.
Sun Protection Benefits
One of the biggest advantages of thumb holes is extended sun protection.
The tops of the hands are highly vulnerable to sun damage and premature aging.
Rashguards with thumb holes extend the sleeve slightly over the hand, helping protect this delicate area.
Combined with UPF 50+ fabric, this extra coverage helps block harmful UV rays and reduces the need to constantly reapply sunscreen on your wrists and hands.
Comfort and Performance Advantages
Thumb holes can also improve comfort during activity.
They help prevent sleeves from bunching up inside wetsuits or life jackets.
For women participating in water sports, this small feature can make a noticeable difference in overall performance and comfort.
Many thumb-hole rashguards also feature flatlock seams and four-way stretch fabrics, ensuring the garment remains flexible and comfortable during movement.
When Thumb Holes Might Not Be Necessary
While practical, thumb holes aren’t essential for everyone.
Some women prefer the freedom of traditional sleeves, especially if they plan to remove the rashguard frequently or use it casually for lounging by the pool.
Thumb holes can also feel slightly restrictive for those who prefer loose-fitting swimwear or minimal compression.
Five Rashguards with Thumb Holes on Amazon
Here are five rashguard styles commonly available on Amazon that include thumb holes for added coverage and functionality:
Women’s UPF 50+ Long Sleeve Rashguard with Thumb Holes – Provides extended hand coverage and strong sun protection.
Women's long-sleeve swimsuits designed with thumb holes help keep the sleeves in place and provide more coverage for your hands, effectively protecting you from the harmful effects of UV rays.
Zip-Front Rashguard with Thumb Hole Sleeves – Easy to put on and take off, with adjustable ventilation.
The rash guard features long sleeves and a zip front, a modified neckline, is easy to put on and off, and offers no chafing.
Lightweight Quick-Dry Rashguard with Hand Coverage – Breathable fabric ideal for warm climates.
Swim shirt with long sleeves and UPF 50+ fabric to protect your skin by blocking harmful Ultraviolet rays, and provide quick-drying, breathable material.
Athletic Rashguard with Stretch Panels and Thumb Holes – Designed for active water sports and mobility.
Features a slim-waist design, color-block print, and thumbhole sleeve. The vibrant colors ensure you'll stand out on the beach. And the raglan sleeve design enhances your natural curves, giving you a slender, eye-catching waist.
Relaxed-Fit Rashguard with Extended Sleeves – Comfortable option for beach days and travel.
Branded crew neck with long sleeve design, allowing arms a full range of movement. Thumb hole sleeve that provides stretch comfort and unrestricted mobility during activity.
These styles combine convenience, sun protection, and comfort.
Are Thumb Hole Rashguards Worth It?
For women who spend long hours outdoors or participate in water sports, rashguards with thumb holes can be a surprisingly practical upgrade.
They help keep sleeves in place, extend sun protection, and improve comfort during activity.
While not essential for everyone, many women find that this small design feature adds noticeable functionality to their swimwear.
