icon-account icon-glass
Free Domestic Shipping
Mood Indigo Mood Indigo Mood Indigo
Mood Indigo
Mood Indigo
Mood Indigo
Mood Indigo Mood Indigo Mood Indigo

Rock Lobster Swim Trunk


  • Our signature quick-dry swim trunks have four way stretch, water resistant fabric and bold dynamic prints that provide precise comfort in and out of the water.

    4 Way Stretch Catch Swim Trunk
    Elastic Waist
    Novelty Draw Cord With Colored Metal Tip
    Side Seam Pockets
    Back Flap Pocket With Drainage Grommets
    Rainforest Rubber Logo Patch
    Mesh Liner
    Water Repellent For Quicker Drying

Size (US) Chest Neck Waist Arm Length
XS 32-34 13-13.5 26-28 31-32
S 35-37 14-14.5 29-31 32-33
M 38-40 15-15.5 32-34 33-34
L 41-43 16-16.5 35-37 34-35
XL 44-46 17-17.5 38-40 35-36
XXL 47-49 18-18.5 41-43 36-36.5



Measure under your arms around the fullest part of your chest.

Arm Length

Bend your elbow at 90 degrees and put your hand on your hip.  Start the tape measure at the bone at the center back of your neck.  Continue the tape measure along your shoulder to your elbow & down to your wrist bone.  This is your total arm length.


Measure around the middle of your neck (at the Adam’s apple), keeping tape a bit loose.


Measure around your natural waistline, keeping the tape a bit loose.

Still not sure what you need? Email customerservice@rainforest.com